/ Dictionary / Index B bacterioid: Meaning and Definition of Find definitions for: bac•te•ri•oid Pronunciation: (bak-tēr'ē-oid"), [key] — n. bacteroid. —adj. bacteroid. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: bacterioid (Thesaurus) bacteriochlorophyll bacteriol. Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language