AskDefine | Define clitellum

User Contributed Dictionary



  1. A glandular swelling in the epidermis of some annelid worms; it secretes a viscous fluid in which the eggs are depositied.

Extensive Definition

In earthworms and some other annelids, the clitellum is a thickened glandular section of the body wall that secretes a viscid sac in which the eggs are deposited. Once the eggs have been deposited in the sac, the clitellum slides off of the earthworm's body.
clitellum in Spanish: Clitelo
clitellum in Galician: Clitelo
clitellum in Polish: Klitellum
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