\Spi`ro*ch[ae]"ta\, Spirochaete \Spi`ro*ch[ae]"te\,
n. [L. spira a coil + Gr. ??? hair.] (Biol.)
A genus of Spirobacteria similar to Spirillum, but
distinguished by its motility. One species, the
{Spiroch[ae]te Obermeyeri}, is supposed to be the cause of
relapsing fever.