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WordReference Random House Unabridged Dictionary of American English © 2024in•vol•u•cel (in vol′yə sel′),USA pronunciation n. [Bot.]- Botanya secondary involucre, as in a compound cluster of flowers. See illus. under involucre.
- Neo-Latin involūcellum, diminutive of Latin involūcrum involucrum; for formation, see castellum
- 1755–65;
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