oxygen
n. nonmetallic diatomic element that is normally colorless odorless and tasteless and which is the most abundant element and is essential to life | ||||
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Oxygen Definition from Computer & Internet Dictionaries & Glossaries
| Integrated Circuit Terminology |
Oxygen
atomic symbol, O, oxygen is the 8th element in the periodic table (atomic number 8) with an atomic weight of 16.00. Oxygen is a group VIB element and is an oxidizer. Oxygen is used to oxidize silicon and in etching and stripping systems.
atomic symbol, O, oxygen is the 8th element in the periodic table (atomic number 8) with an atomic weight of 16.00. Oxygen is a group VIB element and is an oxidizer. Oxygen is used to oxidize silicon and in etching and stripping systems.
Oxygen Definition from Language, Idioms & Slang Dictionaries & Glossaries
| Webster's Revised Unabridged Dictionary (1913) |
Oxygen
(n.)
Chlorine used in bleaching.
(n.)
A colorless, tasteless, odorless, gaseous element occurring in the free state in the atmosphere, of which it forms about 23 per cent by weight and about 21 per cent by volume, being slightly heavier than nitrogen. Symbol O. Atomic weight 15.96.
(n.)
Chlorine used in bleaching.
(n.)
A colorless, tasteless, odorless, gaseous element occurring in the free state in the atmosphere, of which it forms about 23 per cent by weight and about 21 per cent by volume, being slightly heavier than nitrogen. Symbol O. Atomic weight 15.96.
| WordNet 2.0 |
oxygen
Noun
1. a nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas; constitutes 21 percent of the atmosphere by volume; the most abundant element in the earth's crust
(synonym) O, atomic number 8
(hypernym) chemical element, element
(hyponym) liquid oxygen, LOX
(substance-holonym) water, H2O
(derivation) oxygenate, oxygenize, oxygenise, aerate
Noun
1. a nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas; constitutes 21 percent of the atmosphere by volume; the most abundant element in the earth's crust
(synonym) O, atomic number 8
(hypernym) chemical element, element
(hyponym) liquid oxygen, LOX
(substance-holonym) water, H2O
(derivation) oxygenate, oxygenize, oxygenise, aerate
| hEnglish - advanced version |
oxygen
oxygen
\ox"y*gen\ (?), n. [f. oxygène, from gr. &?;&?;&?;&?; sharp, acid + root of &?;&?;&?;&?; to be born. so called because originally supposed to be an essential part of every acid.]
1. (chem.) a colorless, tasteless, odorless, gaseous element occurring in the free state in the atmosphere, of which it forms about 23 per cent by weight and about 21 per cent by volume, being slightly heavier than nitrogen. symbol o. atomic weight 15.96.
note: it occurs combined in immense quantities, forming eight ninths by weight of water, and probably one half by weight of the entire solid crust of the globe, being an ingredient of silica, the silicates, sulphates, carbonates, nitrates, etc. oxygen combines with all elements (except fluorine), forming oxides, bases, oxyacid anhydrides, etc., the process in general being called oxidation, of which combustion is only an intense modification. at ordinary temperatures with most substances it is moderately active, but at higher temperatures it is one of the most violent and powerful chemical agents known. it is indispensable in respiration, and in general is the most universally active and efficient element. it may be prepared in the pure state by heating potassium chlorate. this element (called dephlogisticated air by priestley) was named oxygen by lavoisier because he supposed it to be a constituent of all acids. this is not so in the case of a very few acids (as hydrochloric, hydrobromic, hydric sulphide, etc.), but these do contain elements analogous to oxygen in property and action. moreover, the fact that most elements approach the nearer to acid qualities in proportion as they are combined with more oxygen, shows the great accuracy and breadth of lavoisier's conception of its nature.
2. chlorine used in bleaching. [manufacturing name]
oxygen
n : a nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas; constitutes 21 percent of the atmosphere by volume; the most abundant element in the earth's crust [syn: o, atomic number 8]
oxygen
symbol: o atomic number: 8 atomic weight: 15.9994 a colourless, odourless gaseous element belonging to group 16 of the periodic table. it is the most abundant element present in the earth's crust. it also makes up 20.8% of the earth's atmosphere. for industrial purposes, it is separated from liquid air by fractional distillation. it is used in high temperature welding, and in breathing. it commonly comes in the form of oxygen, but is found as ozone in the upper atmosphere. it was discovered by priestley in 1774.
-- elements
similar words(1)
liquid oxygen
oxygen
\ox"y*gen\ (?), n. [f. oxygène, from gr. &?;&?;&?;&?; sharp, acid + root of &?;&?;&?;&?; to be born. so called because originally supposed to be an essential part of every acid.]
1. (chem.) a colorless, tasteless, odorless, gaseous element occurring in the free state in the atmosphere, of which it forms about 23 per cent by weight and about 21 per cent by volume, being slightly heavier than nitrogen. symbol o. atomic weight 15.96.
note: it occurs combined in immense quantities, forming eight ninths by weight of water, and probably one half by weight of the entire solid crust of the globe, being an ingredient of silica, the silicates, sulphates, carbonates, nitrates, etc. oxygen combines with all elements (except fluorine), forming oxides, bases, oxyacid anhydrides, etc., the process in general being called oxidation, of which combustion is only an intense modification. at ordinary temperatures with most substances it is moderately active, but at higher temperatures it is one of the most violent and powerful chemical agents known. it is indispensable in respiration, and in general is the most universally active and efficient element. it may be prepared in the pure state by heating potassium chlorate. this element (called dephlogisticated air by priestley) was named oxygen by lavoisier because he supposed it to be a constituent of all acids. this is not so in the case of a very few acids (as hydrochloric, hydrobromic, hydric sulphide, etc.), but these do contain elements analogous to oxygen in property and action. moreover, the fact that most elements approach the nearer to acid qualities in proportion as they are combined with more oxygen, shows the great accuracy and breadth of lavoisier's conception of its nature.
2. chlorine used in bleaching. [manufacturing name]
oxygen
n : a nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas; constitutes 21 percent of the atmosphere by volume; the most abundant element in the earth's crust [syn: o, atomic number 8]
oxygen
symbol: o atomic number: 8 atomic weight: 15.9994 a colourless, odourless gaseous element belonging to group 16 of the periodic table. it is the most abundant element present in the earth's crust. it also makes up 20.8% of the earth's atmosphere. for industrial purposes, it is separated from liquid air by fractional distillation. it is used in high temperature welding, and in breathing. it commonly comes in the form of oxygen, but is found as ozone in the upper atmosphere. it was discovered by priestley in 1774.
-- elements
similar words(1)
liquid oxygen
| Concise English-Irish Dictionary v. 1.1 |
oxygen
ocsaigin
ocsaigin
| JM Welsh <=> English Dictionary |
Ufelai
Ufelai = n. oxygen
Ufelai = n. oxygen
Oxygen Definition from Religion & Spirituality Dictionaries & Glossaries
| Rakefet |
Oxygen
Oxygen The physical elements are merely the grossest manifestations or reflections on this material plane of invisible, intangible spiritual originants. In this context, all the matter in the universe can be reduced to four substantial elements: carbon, hydrogen, oxygen, and nitrogen. In the first manifested triad -- Mother, Father-Son-Husband, Son -- Oxygen corresponds to Father-Son-Husband; thus, the names of the chemical elements are also used to denote the subtler, more ethereal or spiritual elements from which they proceed.
"We would call hydrogen and oxygen (which instills the fire of life into the 'Mother' by incubation) in the pregenetic and even pre-geological ages -- the Spirit, the noumenon of that which becomes in its grossest form oxygen and hydrogen and nitrogen on Earth -- nitrogen being of no divine origin, but merely an earth-born cement to unite other gases and fluids, and serve as a sponge to carry in itself the breath of LIFE -- pure air" (SD 1:626). Oxygen corresponds to vitality or prana in the lower quaternary of human principles. Moreover, an elixir of life is said to be produced alchemically from ozone, an allotrope of oxygen (SD 1:144).
Oxygen The physical elements are merely the grossest manifestations or reflections on this material plane of invisible, intangible spiritual originants. In this context, all the matter in the universe can be reduced to four substantial elements: carbon, hydrogen, oxygen, and nitrogen. In the first manifested triad -- Mother, Father-Son-Husband, Son -- Oxygen corresponds to Father-Son-Husband; thus, the names of the chemical elements are also used to denote the subtler, more ethereal or spiritual elements from which they proceed.
"We would call hydrogen and oxygen (which instills the fire of life into the 'Mother' by incubation) in the pregenetic and even pre-geological ages -- the Spirit, the noumenon of that which becomes in its grossest form oxygen and hydrogen and nitrogen on Earth -- nitrogen being of no divine origin, but merely an earth-born cement to unite other gases and fluids, and serve as a sponge to carry in itself the breath of LIFE -- pure air" (SD 1:626). Oxygen corresponds to vitality or prana in the lower quaternary of human principles. Moreover, an elixir of life is said to be produced alchemically from ozone, an allotrope of oxygen (SD 1:144).
Oxygen Definition from Science & Technology Dictionaries & Glossaries
| WEATHER&METEOROLOGY |
OXYGEN (O2)
A colorless, tasteless, ordorless gas that is the second most abundant consituent of dry air. It comprises 20.946%.
A colorless, tasteless, ordorless gas that is the second most abundant consituent of dry air. It comprises 20.946%.
| Mineralogy Database |
Oxygen (O )
Atomic Mass : 15.9994
Atomic Number : 8
Name Origins: Greek, oxy genes = "acid forming."
Year Discovered : 1774
Discovery Credits : J. Preistley at Leeds, UK, and independently by C. W. Scheele at Uppsala, Sweden.
More Details
Atomic Mass : 15.9994
Atomic Number : 8
Name Origins: Greek, oxy genes = "acid forming."
Year Discovered : 1774
Discovery Credits : J. Preistley at Leeds, UK, and independently by C. W. Scheele at Uppsala, Sweden.
More Details
| Abbreviation Airbus A340 |
OXY
Oxygen
Oxygen
| Chemistry of the Elements |
Oxygen
Name: oxygen
Symbol: O
Atomic number: 8
Atomic weight: 15.9994 (3) g r
Group in periodic table: 16
Group name: Chalcogen
Period in periodic table: 2
Block in periodic table: p-block
CAS registry ID: 7782-44-7
Oxygen is a Group 16 element. While about one fifth of the atmosphere is oxygen gas, the atmosphere of Mars contains only about 0.15% oxygen. Oxygen is the third most abundant element found in the sun, and it plays a part in the carbon-nitrogen cycle, one process responsible for stellar energy production. Oxygen in excited states is responsible for the bright red and yellow-green colours of the aurora. About two thirds of the human body, and nine tenths of water, is oxygen. The gas is colourless, odourless, and tasteless. Liquid and solid oxygen are pale blue and strongly paramagnetic (contains unpairedelectrons).
Ozone (O3) is another allotrope of oxygen. It is formed from electrical discharges or ultraviolet light acting on O2. It is an important component of the atmosphere (in total amounting to the equivalent of a layer about 3 mm thick at ordinary pressures and temperatures) which is vital in preventing harmful ultraviolet rays of the sun from reaching the earth's surface. Aerosols in the atmosphere have a detrimental effect on the ozone layer. Large holes in the ozone layer are forming over the polar regions and these are increasing in size annually. Paradoxically, ozone is toxic! Undiluted ozone is bluish in colour. Liquid ozone is bluish-black, and solid ozone is violet-black.
Oxygen is very reactive and oxides of most elements are known. It is essential for respiration of all plants and animals and for most types of combustion.
Name: oxygen
Symbol: O
Atomic number: 8
Atomic weight: 15.9994 (3) g r
Group in periodic table: 16
Group name: Chalcogen
Period in periodic table: 2
Block in periodic table: p-block
CAS registry ID: 7782-44-7
Oxygen is a Group 16 element. While about one fifth of the atmosphere is oxygen gas, the atmosphere of Mars contains only about 0.15% oxygen. Oxygen is the third most abundant element found in the sun, and it plays a part in the carbon-nitrogen cycle, one process responsible for stellar energy production. Oxygen in excited states is responsible for the bright red and yellow-green colours of the aurora. About two thirds of the human body, and nine tenths of water, is oxygen. The gas is colourless, odourless, and tasteless. Liquid and solid oxygen are pale blue and strongly paramagnetic (contains unpairedelectrons).
Ozone (O3) is another allotrope of oxygen. It is formed from electrical discharges or ultraviolet light acting on O2. It is an important component of the atmosphere (in total amounting to the equivalent of a layer about 3 mm thick at ordinary pressures and temperatures) which is vital in preventing harmful ultraviolet rays of the sun from reaching the earth's surface. Aerosols in the atmosphere have a detrimental effect on the ozone layer. Large holes in the ozone layer are forming over the polar regions and these are increasing in size annually. Paradoxically, ozone is toxic! Undiluted ozone is bluish in colour. Liquid ozone is bluish-black, and solid ozone is violet-black.
Oxygen is very reactive and oxides of most elements are known. It is essential for respiration of all plants and animals and for most types of combustion.
| General Chemistry Glossary |
oxygen
(O) Element 8, atomic weight 15.9994, a colorless, odorless gas that makes up about 1/5 of the earth's atmosphere and (in combined form) 8/9ths of earth's oceans and almost half of the earth's crust. The name is derived from the French oxygène, which means "acid generating".
(O) Element 8, atomic weight 15.9994, a colorless, odorless gas that makes up about 1/5 of the earth's atmosphere and (in combined form) 8/9ths of earth's oceans and almost half of the earth's crust. The name is derived from the French oxygène, which means "acid generating".
Oxygen Definition from Medicine Dictionaries & Glossaries
| Aids Glossary |
oxygen
a colorless, odorless gas that is essential to the normal function of all cells of the body.
a colorless, odorless gas that is essential to the normal function of all cells of the body.
| Lung Diseases Glossary |
Oxygen
Colorless odorless gas that makes up about 20 percent of the air we breathe; it is essential to life because it is used for the chemical reactions that occur in the cells of the body.
Context: Bronchopulmonary Dysplasia
Colorless odorless gas that makes up about 20 percent of the air we breathe; it is essential to life because it is used for the chemical reactions that occur in the cells of the body.
Context: Bronchopulmonary Dysplasia
| A Basic Guide to ASL |
Oxygen
The signer fingerspells 'O-2'
- 
, dropping the hand a bit for the "2".
The signer fingerspells 'O-2'
Oxygen Definition from Society & Culture Dictionaries & Glossaries
| Environmental Engineering (English ver.) |
OXYGEN
(Chemical symbol O) An element occurring free as a colorless, tasteless, odorless diatomic gas, O2 (ordinary oxygen), in the Atmosphere, of which it forms about 23 per cent by weight and about 21 per cent by volume, being slightly heavier than nitrogen. Oxygen combines with most elements, is essential for plant and animal respiration, and is required for nearly all combustion. Oxygen is the most abundant of all the elements on the earth's surface, for, in addition to its occurrence free in air, it forms, in combination with Hydrogen, 88.812 per cent by weight of Water (H2O) and nearly one-half by weight of the rocks composing the earth's crust, being a constituent of silica, the silicates, the carbonates, the sulphates, etc. It is a constituent of all but a very few acids and, in general, the greater the proportion of oxygen with which an element combines, the more acidic does it become. It is also a constituent of a large proportion of organic compounds. Oxygen is also known in an allotropic, more active form, Ozone, O3.
(Chemical symbol O) An element occurring free as a colorless, tasteless, odorless diatomic gas, O2 (ordinary oxygen), in the Atmosphere, of which it forms about 23 per cent by weight and about 21 per cent by volume, being slightly heavier than nitrogen. Oxygen combines with most elements, is essential for plant and animal respiration, and is required for nearly all combustion. Oxygen is the most abundant of all the elements on the earth's surface, for, in addition to its occurrence free in air, it forms, in combination with Hydrogen, 88.812 per cent by weight of Water (H2O) and nearly one-half by weight of the rocks composing the earth's crust, being a constituent of silica, the silicates, the carbonates, the sulphates, etc. It is a constituent of all but a very few acids and, in general, the greater the proportion of oxygen with which an element combines, the more acidic does it become. It is also a constituent of a large proportion of organic compounds. Oxygen is also known in an allotropic, more active form, Ozone, O3.
Oxygen Definition from Entertainment & Music Dictionaries & Glossaries
| English to Federation-Standard Golic Vulcan |
Oxygen
esh-tukh
esh-tukh
| English - Klingon |
oxygen
n. yInSIp
n. yInSIp
| Phobia |
Hydrophobia
Fear of water
Fear of water
Oxygen Definition from Sports Dictionaries & Glossaries
| Scuba Diving |
oxygen
O2; gas vital for all life on this planet; makes up 21% of air by volume.
O2; gas vital for all life on this planet; makes up 21% of air by volume.
Oxygen Definition from Encyclopedia Dictionaries & Glossaries
| Wikipedia English - The Free Encyclopedia |
Oxygen
In science, oxygen (IPA: ) is a chemical element with the chemical symbol O and atomic number 8. The word oxygen derives from two roots in Greek, οξύς (oxys) (acid, lit. sharp) and -γενής (-genēs) (producer, lit. begetter). It was recognized in 1777 by Antoine Lavoisier, who coined the name oxygen from the Greek roots mentioned above because he erroneously thought that it was a constituent of all acids. (The definition of acid has since been revised). Oxygen has a valency of 2. On Earth it is usually bonded to other elements covalently or ionically. Examples for common oxygen-containing compounds include water (H2O), sand (silica, SiO2), and rust (iron oxide, Fe2O3).
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