Dictionary.com

tetratomic

[ te-truh-tom-ik ]
/ ˌtɛ trəˈtɒm ɪk /
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adjective Chemistry.

having four atoms per molecule, especially of a specified kind.
having four replaceable atoms or radicals.

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Origin of tetratomic

First recorded in 1860–65; tetr- + atomic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for tetratomic

tetratomic
/ (ˌtɛtrəˈtɒmɪk) /

adjective

composed of four atoms or having four atoms per moleculephosgene has tetratomic molecules
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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