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Definition of Ion

Babylon English Dictionary

(Physics, Chemistry) electrically charged atom formed by the loss or gain of an electron; electrically charged particle formed in a gas
Ion Definition from Language, Idioms & Slang Dictionaries & Glossaries
Webster's Revised Unabridged Dictionary (1913)
One of the elements which appear at the respective poles when a body is subjected to electro-chemical decomposition. Cf. Anion, Cation.

A noun suffix denoting act, process, result of an act or a process, thing acted upon, state, or condition; as, revolution, the act or process of revolving; construction, the act or process of constructing; a thing constructed; dominion, territory ruled over; subjection, state of being subject; dejection; abstraction.
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter. About
hEnglish - advanced version

\i"on\ (?), n. [gr. &?;, neut, of &?;, p. pr. of &?; to go.] (elec. chem.) one of the elements which appear at the respective poles when a body is subjected to electro-chemical decomposition. cf. anion, cation.
\i"on\, n.
1. one of the electrified particles into which, according to the electrolytic dissociation theory, the molecules of electrolytes are divided by water and other solvents. an ion consists of one or more atoms and carries a unit charge of electricity, 3.4 x 10-10 electrostatic units, or a multiple of this. those which are positively electrified (hydrogen and the metals) are called cations; negative ions (hydroxyl and acidic atoms or groups) are called anions.
note: thus, hydrochloric acid (hcl) dissociates, in aqueous solution, into the hydrogen ion, chformh^ + c/hform, and the chlorine ion, chformcl^ - c/hform; ferric nitrate, fe(no3)3 , yields the ferric ion, chformfe^ +++ c/hform, and nitrate ions, chformno3^ - c/hform, chformno3^ - c/hform, chformno3^ - c/hform. when a solution containing ions is made part of an electric circuit, the cations move toward the cathode, the anions toward the anode. this movement is called migration, and the velocity of it differs for different kinds of ions. if the electromotive force is sufficient, electrolysis ensues: cations give up their charge at the cathode and separate in metallic form or decompose water, forming hydrogen and alkali; similarly, at the anode the element of the anion separates, or the metal of the anode is dissolved, or decomposition occurs.
2. one of the small electrified particles into which the molecules of a gas are broken up under the action of the electric current, of ultraviolet and certain other rays, and of high temperatures. to the properties and behavior of ions the phenomena of the electric discharge through rarefied gases and many other important effects are ascribed. at low pressures the negative ions appear to be electrons; the positive ions, atoms minus an electron. at ordinary pressures each ion seems to include also a number of attached molecules. ions may be formed in a gas in various ways.
n : an electrically charged particle; an atom that has lost one or more of its electrons
internetworking over nbma (lis, lag, atm, nbma)

  similar words(4) 

 ion exchange 
 ion pump 
 ion engine 
 ion beam 
JM Welsh <=> English Dictionary
Ion = n. a first cause; the Lord
WordNet 2.0

1. a particle that is electrically charged (positive or negative); an atom or molecule or group that has lost or gained one or more electrons
(hypernym) particle
(hyponym) anion
(derivation) ionate
Ion Definition from Business & Finance Dictionaries & Glossaries
Company Info: Ticker, Name, Description
Exchange: NYSE
Designs, manufactures and sells or leases products, systems and services for desalination, measurement, purifying and treatment of water and other liquids, principally utilizing separations technology and related methods; Owns and operates seawater desalination plants; Sells ultra-pure water equipment and systems; Produces sodium hypochlorite
Ion Networks Inc
Exchange: Nasdaq
Develops and manufactures software and hardware solutions for monitoring and managing mission critical voice, data, video and environmental applications and networking systems.
Ion Definition from Science & Technology Dictionaries & Glossaries
Electrochemistry Dictionary
"An electrically charged chemical particle (atom, molecule, or molecule fragment). ""Anions"" are negatively charged, and ""cations"" are positively charged. "
General Chemistry Glossary
A particle obtained by adding or removing electrons from atoms or molecules. An atom or molecule with missing electrons has a net positive charge and is called a cation ; one with extra electrons has a net negative charge and is called an anion .
Energy Glossary
An atom or group of atoms that is electrically charged.
is an atom or molecule that has acquired an electric charge by the loss or gain of one or more electrons. :isothermal means of or indicating equality of temperature. :isotherms are lines connecting points of equal temperature on a weather map.
Technical English by wpv
An atom or radical in solution carrying an integral electric charge, either positive (cation) or negative (anion).
Materials Science and Engineering Glossary of Terms
an atom with a positive charge because it has had electrons removed or a negative charge because it has had electrons
An atom which has either lost or gained one or more electrons. A positive ion remains if an electron is removed, for example, by being struck by a photon or fast charged particle of sufficient energy to overcome the binding energy of that electron.
Astronomy and Physics Terms by
An atom or molecular fragment that has a positive electrical charge due to the loss of one or more electrons; the simplest ion is the hydrogen nucleus, a single proton.
Fiber Optics, Optical Networking Terms
An electrically charged atom.
Solar Physics Glossary
An atom that has lost or gained one or more electrons and has become electrically charged as a result.
Ion Definition from Computer & Internet Dictionaries & Glossaries
Computer Abbreviations v1.5
Text Program/Installation Description
4DOS File Description
Integrated Circuit Terminology
an atom that has either gained or lost an Electron making it either positively or negatively Charged.
Copyright © 2000 - 2006 IC Knowledge LLC. All rights reserved.
Ion Definition from Encyclopedia Dictionaries & Glossaries
Wikipedia English - The Free Encyclopedia
An ion is an atom or molecule in which the total number of electrons is not equal to the total number of protons, giving the atom a net positive or negative electrical charge.

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In physics and chemistry, an ion is an atom or group of atoms with a net electric charge.

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The Ionians (, Íones, singular , Íon) were one of the four major tribes that the Greeks considered themselves divided into during the ancient period, alongside Dorians, Aeolians and Achaeans. The Ionian dialect was one of the three major linguistic divisions of the Hellenic world, together with the Dorian and Aeolian dialects.

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© This article uses material from Wikipedia® and is licensed under the GNU Free Documentation License and under the Creative Commons Attribution-ShareAlike License
Ion Definition from Society & Culture Dictionaries & Glossaries
EPA Terms of Environment
An electrically charged atom or group of atoms.
Provided as a public service by the U.S. Environmental Protection Agency
Environmental Engineering (English ver.)
(1) An atom or molecule that carries a net charge (either positive or negative) because of an imbalance between the number of protons and the number of electrons present. If the ion has more electrons than protons, it has a negative charge and is called an anion; if it has more protons than electrons it has a positive charge and is called a cation. (2) (Water Quality) An electrically charged atom that can be drawn from waste water during electrodialysis.
Ion Definition from Entertainment & Music Dictionaries & Glossaries
English to Federation-Standard Golic Vulcan
English - Klingon
n. tat
Ion Definition from Religion & Spirituality Dictionaries & Glossaries
Ion (Greek) Son of Apollo and Creusa, the daughter of Athenian king Erechtheus. Exposed by his mother at birth, he was taken by Hermes to be brought up by the Delphic priestesses. Eventually reconciled with his mother and her second husband, he became ruler of the Aegialeans, afterwards called Ionians, and of Athens. From his four sons came the four Ionic tribes. {BCW 5:215}
Webart Magic Astronomical Glossary
An atom that has lost or gained one or more electrons and has become electrically charged as a result.
Ion Definition from Medicine Dictionaries & Glossaries
CDC Radiological Terms
an atom that has fewer or more electrons than it has protons causing it to have an electrical charge and, therefore, be chemically reactive.
Source: Centers for Disease Control and Prevention (CDC) ( About )
Hepatitis Central (TM) Liver Disease Medical Glossary
Atom or group of atoms that has acquired an electric charge through the gain or loss of an electron or electrons