nonmetallic element of the halogen group used in medicine and photography (Chemistry); powdered iodine mixed with ethyl alcohol to form an antiseptic solution
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Iodine Definition from Language, Idioms & Slang Dictionaries & Glossaries
(n.)
A nonmetallic element, of the halogen group, occurring always in combination, as in the iodides. When isolated it is in the form of dark gray metallic scales, resembling plumbago, soft but brittle, and emitting a chlorinelike odor. Symbol I. Atomic weight 126.5. If heated, iodine volatilizes in beautiful violet vapors.
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter. AboutA nonmetallic element, of the halogen group, occurring always in combination, as in the iodides. When isolated it is in the form of dark gray metallic scales, resembling plumbago, soft but brittle, and emitting a chlorinelike odor. Symbol I. Atomic weight 126.5. If heated, iodine volatilizes in beautiful violet vapors.
iodine
green, an artificial green dyestuff, consisting of an iodine derivative of rosaniline; -- called also night green..
see iodine
similar words(9)
tincture of iodine
radioactive iodine excretion test
radioactive iodine uptake test
radioactive iodine test
iodine yellow
iodine-125
iodine-131
iodine green
iodine scarlet
Noun
1. a nonmetallic element belonging to the halogens; used especially in medicine and photography and in dyes; occurs naturally only in combination in small quantities (as in sea water or rocks)
(synonym) iodin, I, atomic number 53
(hypernym) chemical element, element
(hyponym) iodine-131
(substance-holonym) seawater, saltwater, brine
(derivation) iodinate
2. a tincture consisting of a solution of iodine in ethyl alcohol; applied topically to wounds as an antiseptic
(synonym) tincture of iodine
(hypernym) tincture
Iodine Definition from Science & Technology Dictionaries & Glossaries
Name: iodine
Symbol: I
Atomic number: 53
Atomic weight: 126.90447 (3)
Group in periodic table: 17
Group name: Halogen
Period in periodic table: 5
Block in periodic table: p-block
CAS registry ID: 7553-56-2
Iodine is a bluish-black, lustrous solid. It volatilises at ambient temperatures into a pretty blue-violet gas with an irritating odour.
It forms compounds with most elements, but is less reactive than the other halogens, which displace it from iodides. Iodine exhibits some metallic-like properties. It dissolves readily in chloroform, carbon tetrachloride, or carbon disulphide to form beautiful purple solutions. It is only slightly soluble in water. Iodine compounds are important in organic chemistry and very useful in medicine and photography. Lack of iodine is the cause of goitre (Derbyshire neck). The deep blue colour with starch solution is characteristic of the free element. It is assimilated by seaweeds from which it may be recovered, and is found in Chilean saltpetre, caliche, old salt brines, and salt wells.
Symbol: I
Atomic number: 53
Atomic weight: 126.90447 (3)
Group in periodic table: 17
Group name: Halogen
Period in periodic table: 5
Block in periodic table: p-block
CAS registry ID: 7553-56-2
Iodine is a bluish-black, lustrous solid. It volatilises at ambient temperatures into a pretty blue-violet gas with an irritating odour.
It forms compounds with most elements, but is less reactive than the other halogens, which displace it from iodides. Iodine exhibits some metallic-like properties. It dissolves readily in chloroform, carbon tetrachloride, or carbon disulphide to form beautiful purple solutions. It is only slightly soluble in water. Iodine compounds are important in organic chemistry and very useful in medicine and photography. Lack of iodine is the cause of goitre (Derbyshire neck). The deep blue colour with starch solution is characteristic of the free element. It is assimilated by seaweeds from which it may be recovered, and is found in Chilean saltpetre, caliche, old salt brines, and salt wells.
A mineral added to salt to prevent a goiter, an iodine-deficiency condition.
Atomic Mass : 126.90447
Atomic Number : 53
Name Origins: Greek, iodes = "violet."
Year Discovered : 1811
Discovery Credits : Discovered by B. Courtois at Paris, France.
More Details
Atomic Number : 53
Name Origins: Greek, iodes = "violet."
Year Discovered : 1811
Discovery Credits : Discovered by B. Courtois at Paris, France.
More Details
Iodine Definition from Encyclopedia Dictionaries & Glossaries
Iodine is a chemical element with the symbol I and atomic number 53. The name is pronounced , , or in both American and British English. The name is from Greek ioeides, meaning violet or purple, due to the color of elemental iodine vapor.
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Iodine Definition from Society & Culture Dictionaries & Glossaries
Aroma or bouquet of the whisky.
Can be: Floral, Nutty, Earthy, Honey, Oak, Peaty, Spicy, Malty, Smoky, Sweet, Fruity, Iodine, etc.
The nose is very important for evaluating the whiskys.
Can be: Floral, Nutty, Earthy, Honey, Oak, Peaty, Spicy, Malty, Smoky, Sweet, Fruity, Iodine, etc.
The nose is very important for evaluating the whiskys.
Iodine Definition from Entertainment & Music Dictionaries & Glossaries
Iodine Definition from Medicine Dictionaries & Glossaries
An element that is necessary for the body to make thyroid hormone. It is found in shellfish and iodized salt.
A Service of the National Cancer Institute.
a nonmetallic solid element. There are both radioactive and non-radioactive isotopes of iodine. Radioactive isotopes of iodine are widely used in medical applications. Radioactive iodine is a fission product and is the largest contributor to people’s radiation dose after an accident at a nuclear reactor.
Source: Centers for Disease Control and Prevention (CDC) ( About )
Essential element in the diet. The thyroid gland uses iodine to make thyroid hormones. The two most important thyroid hormones are thyroxine (T4) and triiodothyronine (T3). Thyroxine (T4) has four iodine molecules attached to its structure, while triiodothyronine (T3) has three iodine molecules attached. Iodine is found in seafood, bread, salt, and seaweed.
Essential mineral that is an integral part of the thyroid hormones, thyroxin and triodothyronine which have important metabolic roles and govern basal metabolism. Iodine aids in the development and functioning of the thyroid gland, regulates the body's production of energy, and helps burn excess fat by stimulating the rate of metabolism. The best known iodine deficiency symptom is goiter. Other iodine deficiency problems are reduced vitality, hypothyrodism, inability to think clearly, low resistance to infection, loss of control of the muscles of the mouth resulting in mouth contortion and drooling, defective teeth, tendency to obesity and cretinism which is a congenital abnormal condition marked by physical stunting and mental deficiency
