A thickened, glandular band found around the body of sexually mature earthworms and leeches that secretes mucus to form a cocoon during reproduction. This structure is essential for egg-laying and protecting developing embryos.
From Latin 'clitellae' meaning 'pack-saddle,' referring to its saddle-like appearance around the worm's body. The term was first used in zoological literature in the 18th century when naturalists noted this distinctive swelling in mature worms.
Try Another Word