Bacteroides Bac·te·roi·des (bāk'tə-roi'dēz)
n.
A genus of gram-negative, anaerobic, rod-shaped, non-sporeforming bacteria that occur in the respiratory, intestinal, and urogenital tracts of warm-blooded animals and include some pathogenic species.
| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |
| a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison. |