spirochaete
/ˈspaɪərəʊkiːt/( <美> spirochete)
noun
1- a flexible spirally twisted bacterium, especially one that causes syphilis（尤指引起梅毒的）螺旋体。
1.1
- Treponema and other genera, order Spirochaetales; Gram-negative.密螺旋体属及其他属, 螺旋体目; 格兰氏阴性。
词源
late 19th cent.: from SPIRO-1 'in a spiral' + Greek khaitē 'long hair'.