genus Spirochaeta ge·nuss·pi·rochaeta uncommon noun 1. type genus of the family Spirochaetaceae; flexible undulating chiefly aquatic bacteria SynonymsSpirochaetagenus Spirochaeta Related words Broader terms bacteria genus Parts Spirochaetaceae WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
