Definition of clitellum
: a thickened glandular section of the body wall of some annelids that secretes a viscid sac in which the eggs are deposited
Origin and Etymology of clitellum
New Latin, alteration of Latin clitellae packsaddle
First Known Use: 1839See Words from the same year
Seen and Heard
What made you want to look up clitellum? Please tell us where you read or heard it (including the quote, if possible).