| Noun | 1. | Spirillaceae - rigid spirally curved elongate bacteria bacteria family - a family of bacteria order Pseudomonadales, Pseudomonadales - one of two usually recognized orders of true bacteria; Gram-negative spiral or spherical or rod-shaped bacteria usually motile by polar flagella; some contain photosynthetic pigments genus Spirillum - a genus of bacteria genus Vibrio - a genus of bacteria |