Botany. a collection or rosette of bracts subtending a flower cluster, umbel, or the like.
a covering, especially a membranous one.
Origin of involucre
1570–80;Related formsin·vo·lu·cral, adjective
< Middle French
< Latin involūcrum involucrum
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for involucre
Historical Examples of involucre
British Dictionary definitions for involucre
noun plural -cres or -cra (-krə)
Derived Formsinvolucral, adjectiveinvolucrate, adjective
a ring of bracts at the base of an inflorescence in such plants as the composites
Word Origin for involucre
C16 (in the sense: envelope): from New Latin involucrum, from Latin: wrapper, from involvere to wrap; see involve
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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A series of bracts beneath or around a flower or flower cluster. The cupule, the cuplike structure holding an oak acorn, is a modified, woody involucre.
The American Heritage® Science Dictionary
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