trochus

noun

tro·​chus

ˈtrōkəs

1

a

capitalized : a genus of chiefly Old World tropical marine gastropods (family Trochidae) with beautifully nacreous bluntly conical shells including a large Indo-Pacific species (T. niloticus) extensively used in making buttons and ornamental objects

b

plural -es : top shell

2

plural trochi

-ōˌkī

or trochuses : the inner preoral band of cilia of a trochal disc

broadly : trochal disc

Word History

Etymology

New Latin, from Latin, wheel, iron hoop, from Greek trochos wheel

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