Lexic.us

Definition of Ion

1. Noun. A particle that is electrically charged (positive or negative); an atom or molecule or group that has lost or gained one or more electrons.

Definition of Ion

1. n. One of the elements which appear at the respective poles when a body is subjected to electro-chemical decomposition. Cf. Anion, Cation.

2. n. 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.

Definition of Ion

1. an electrically charged atom [n -S]

Medical Definition of Ion

1. Atomic particle, atom or chemical radical bearing an electric charge, either negative or positive. (16 Dec 1997)

Lexicographical Neighbors of Ion

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