ˌbaktəˈrȯi(ˌ)dēz noun
Etymology: New Latin, from bacterium + -oides
1. capitalized : a genus (the type of the family Bacteroidaceae) of gram-negative anaerobic bacteria having rounded ends, producing no endospores and no pigment, and living usually in the normal intestinal tract
2. plural bacteroides : a bacterium of Bacteroides or a closely related genus