Nearby Words
noun Physics, Chemistry.
1.
an electrically charged atom or group of atoms formed by the loss or gain of one or more electrons, as a cation (positive ion), which is created by electron loss and is attracted to the cathode in electrolysis, or as an anion (negative ion), which is created by an electron gain and is attracted to the anode. The valence of an ion is equal to the number of electrons lost or gained and is indicated by a plus sign for cations and a minus sign for anions, thus: Na+, Cl−, Ca++, S=.
2.
one of the electrically charged particles formed in a gas by electric discharge or the like.
Origin:
< Greek ión going, neuter present participle of iénai to go; term introduced by Michael Faraday in 1834
< Greek ión going, neuter present participle of iénai to go; term introduced by Michael Faraday in 1834
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Ions
is always a great word to know.
So is flibbertigibbet. Does it mean:
| a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes. |
| a chattering or flighty, light-headed person. |
Dictionary.com Unabridged
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
Cite This Source
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Link To ions
American Heritage
Science Dictionary
ion  (ī'ən, ī'ŏn') Pronunciation Key
An atom or a group of atoms that has an electric charge. Positive ions, or cations, are formed by the loss of electrons; negative ions, or anions, are formed by the gain of electrons. |
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
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