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polyatomic

[ pol-ee-uh-tom-ik ]
/ ˌpɒl i əˈtɒm ɪk /
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adjective Chemistry.
pertaining to a molecule containing more than two atoms.
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Origin of polyatomic

First recorded in 1855–60; poly- + atomic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

British Dictionary definitions for polyatomic

polyatomic
/ (ˌpɒlɪəˈtɒmɪk) /

adjective
(of a molecule) containing more than two atoms
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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