/ Dictionary / Index B bacteriochlorophyll: Meaning and Definition of Find definitions for: bac•te•ri•o•chlo•ro•phyll Pronunciation: (bak-tēr"ē-ō-klôr'u-fil, -klōr'-), [key] — n. Biochem. a pale blue-gray form of chlorophyll that is unique to the photosynthetic but anaerobic purple bacteria. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: bacteriochlorophyll (Thesaurus) bacterio- bacterioid Related Content Daily Word Quiz: philanthropy Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language