What is (a) A distinct girdle or band of color; a raised spiral line as seen on certain univalve shells. (b) The clitellus of earthworms. (c) The base of the crown of a tooth called?
cingulum — (a) A distinct girdle or band of color; a raised spiral line as seen on certain univalve shells. (b) The clitellus of earthworms. (c) The base of the crown of a tooth. (Webster's 1913.)
Sources
- Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).
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- Published: 2026-07-17T00:00:00-07:00 · Modified: 2026-07-17T00:00:00-07:00