involucre

in·vo·lu·cre

 (ĭn′və-lo͞o′kər)

n.

A group of one or more whorls of bracts beneath a flower or flower cluster.

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[French, from Latin involūcrum, wrapper, envelope; see involucrum.]

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in′vo·lu′cral (-krəl), in′vo·lu′crate (-krĭt, -krāt′) adj.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

involucre

(ˈɪnvəˌluːkə) or

involucrum

n, pl -cres or -cra (-krə)

(Botany) 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]

ˌinvoˈlucral adj

ˌinvoˈlucrate adj

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

in•vo•lu•cre

(ˈɪn vəˌlu kər)

n.

1. a collection or rosette of bracts subtending a flower cluster, umbel, or the like.

2. a covering, esp. a membranous one.

[1570–80; < Middle French < Latin involūcrum a wrapper, cover <involū-, variant s. of involvere (see involve)]

in`vo•lu′cral, adj.

Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

Thesaurus

Noun

1.

involucre - a highly conspicuous bract or bract pair or ring of bracts at the base of an inflorescence bract - a modified leaf or leaflike part just below and protecting an inflorescence

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