| Noun | 1. | Treponemataceae - small spirochetes some parasitic or pathogenic bacteria family - a family of bacteria order Spirochaetales, Spirochaetales - higher bacteria; slender spiral rodlike forms genus Treponema - type genus of Treponemataceae: anaerobic spirochetes with an undulating rigid body; parasitic in warm-blooded animals genus Borrelia - small flexible parasitic spirochetes having three to five wavy spirals genus Leptospira - very slender aerobic spirochetes; free-living or parasitic in mammals |