ˌspīrəˈkēd.ə noun
Etymology: New Latin, from spir- + -chaeta
1. capitalized : a genus (the type of the family Spirochaetaceae) of spirochetes distinguished by a flexible undulating body with the protoplasm wound spirally around an elastic axis filament and comprising as now restricted various chiefly aquatic forms or formerly these together with important pathogens now placed in the genera Treponema, Borrelia, and Leptospira
2. or spi·ro·che·ta “ pl spirochae·tae or spiroche·tae -ēd.(ˌ)ē : any member of the genus Spirochaeta : spirochete