polyatomic ion

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polyatomic ion

[‚päl·ē·ə¦täm·ik ′ī·ən]
(chemistry)
An electrically charged species formed by covalent bonding of atoms of two or more different elements, usually nonmetals, for example, the ammonium ion (NH4+).
References in periodicals archive ?
These minerals are complex in nature and have polyatomic anions.