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单词 involucrum
释义

WordReference Random House Unabridged Dictionary of American English © 2024
in•vo•lu•crum  (in′və lo̅o̅krəm),USA pronunciation n., pl. -cra (-krə).USA pronunciation 
  1. Botanyinvolucre.
  • Neo-Latin, Latin involūcrum a wrap, cover, equivalent. to involū- (variant stem of involvere to wrap, cover; see involute) + -crum instrumental suffix
  • 1670–80

WordReference Random House Unabridged Dictionary of American English © 2024
in•vo•lu•cre  (invə lo̅o̅′kər),USA pronunciation n. 
  1. Botanya collection or rosette of bracts subtending a flower cluster, umbel, or the like.
  2. Biologya covering, esp. a membranous one.
  • Latin involūcrum involucrum
  • Middle French
  • 1570–80
in′vo•lucral, adj. 

Collins Concise English Dictionary © HarperCollins Publishers::
involucre /ˈɪnvəˌluːkə/, involucrum /ˌɪnvəˈluːkrəm/ n ( pl -cres, -cra / -krə/)
  1. a ring of bracts at the base of an inflorescence in such plants as the composites
Etymology: 16th Century (in the sense: envelope): from New Latin involucrum, from Latin: wrapper, from involvere to wrap; see involve

ˌinvoˈlucral adj ˌinvoˈlucrate adj
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