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triatomic

[trahy-uh-tom-ik]

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adjective Chemistry.

having three atoms in a molecule.

having three replaceable hydrogen atoms.

having three replaceable hydroxyl groups.

Origin of triatomic

First recorded in 1860–65; tri- + atomic

Related formstri·a·tom·i·cal·ly, adverb

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for triatomic

Historical Examples of triatomic

The corresponding group consists of nitrogen, vanadium and niobium; they are triatomic, paramagnetic, and negative.
Occult Chemistry
Annie Besant and Charles W. Leadbeater
Triatomic, trī-a-tom′ik, adj. consisting of three atoms: trivalent.
Chambers's Twentieth Century Dictionary (part 4 of 4: S-Z and supplements)
Various

British Dictionary definitions for triatomic

triatomic

adjective

chem having three atoms in the molecule

Derived Formstriatomically, adverb

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