Bacteroidaceae
noun plural
Bac·te·roi·da·ce·ae
| \ ˌbak-tə-ˌrȯi-ˈdā-sē-ˌē
\
\
Medical Definition of Bacteroidaceae
: a family of extremely varied gram-negative bacteria (order Bacteroidales) that usually live in the digestive tract or on mucous surfaces of warm-blooded animals and are sometimes associated with acute infectious processes — see bacteroides, fusobacterium