[ bak-tuh-roi-deez ]
/ ˌbæk təˈrɔɪ diz /

noun, plural bac·te·roi·des.

any of several rod-shaped, anaerobic bacteria of the genus Bacteroides, occurring in the alimentary and genitourinary tracts of humans and other mammals, certain species of which are pathogenic.

Origin of bacteroides

From New Latin, dating back to 1919; see origin at bacter(i)-, -oid Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for bacteroides

Medicine definitions for bacteroides


[ băk′tə-roidēz ]


A genus of gram-negative, anaerobic, rod-shaped, non-spore-forming bacteria that occur in the respiratory, intestinal, and urogenital tracts of warm-blooded animals and include some pathogenic species.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.