/ Dictionary / Index H halobiont: Meaning and Definition of Find definitions for: hal•o•bi•ont Pronunciation: (hal"ō-bī'ont, hā"lō-), [key] — n. Biol. an organism that thrives in a saline environment. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. halobacteria halo blight Related Content Daily Word Quiz: blanch Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language