See Also: trochal(medicine)
trochal(dictionary)

trochal (iou)



trochal adjective. M19.
[from Greek trokhos wheel + -AL1.]
Chiefly Zoology. Resembling a wheel; wheel-shaped.
trochal disc a retractable disc on the head of a rotifer, bearing a crown of cilia and used for drawing in food or for propulsion.