/ Dictionary / Index T triatic stay: Meaning and Definition of Find definitions for: tri•at'ic stay' Pronunciation: (trī-at'ik), [key] — Naut. Naut. a backstay for the head of a fore-and-aft-rigged topmast, running down to the head of the lower mast next aft. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. triathlon triatomic Related Content Daily Word Quiz: wizened Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language