involucre's

involucre

[in-vuh-loo-ker]
noun
1.
Botany. a collection or rosette of bracts subtending a flower cluster, umbel, or the like.
2.
a covering, especially a membranous one.

Origin:
1570–80; < Middle French < Latin involūcrum involucrum

involucral, adjective
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World English Dictionary
involucre or involucrum (ˈɪnvəˌluːkə, ˌɪnvəˈluːkrəm)
 
n , pl -cres, -cra
a ring of bracts at the base of an inflorescence in such plants as the composites
 
[C16 (in the sense: envelope): from New Latin involucrum, from Latin: wrapper, from involvere to wrap; see involve]
 
involucrum or involucrum (ˈɪnvəˌluːkə, ˌɪnvəˈluːkrəm, -krə)
 
n
 
[C16 (in the sense: envelope): from New Latin involucrum, from Latin: wrapper, from involvere to wrap; see involve]
 
invo'lucral or involucrum
 
adj
 
invo'lucrate or involucrum
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
involucre   (ĭn'-və-l'kər)  Pronunciation Key 
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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