adj. Zool. wheel-shaped. trochal disc Zool. the retractable disc on the head of a rotifer bearing a crown of cilia, used for drawing in food or for propulsion.
[ Gk trokhos wheel ]
TROCHAL
Meaning of TROCHAL in English
Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012