• synonyms


[ trahy-uh-tom-ik ]
/ ˌtraɪ əˈtɒm ɪk /

adjective Chemistry.

having three atoms in a molecule.
having three replaceable hydrogen atoms.
having three replaceable hydroxyl groups.

Nearby words

triassic, triathlete, triathlon, triatic stay, triatoma, triatomic, triaxial, triazine, triazoic, triazolam, triazole

Origin of triatomic

First recorded in 1860–65; tri- + atomic
Related formstri·a·tom·i·cal·ly, adverb Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for triatomic

  • 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
  • The corresponding group consists of nitrogen, vanadium and niobium; they are triatomic, paramagnetic, and negative.

    Occult Chemistry|Annie Besant and Charles W. Leadbeater

British Dictionary definitions for triatomic


/ (ˌtraɪəˈtɒmɪk) /


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