Definition of involucre in English:

Share this entry

involucre

Pronunciation: /ˈɪnvəl(j)uːkə/

noun

1 Anatomy A membranous envelope.
2 Botany A whorl or rosette of bracts surrounding an inflorescence (especially a capitulum) or at the base of an umbel.
Example sentences
  • The cupules are simple involucres of bracts which are spirally arranged (according to a Fibonacci pattern) on the floral axis preceding the flower.
  • Basal leaves and flowers initiate from a tuberous rhizome and three green cauline leaves arranged in a whorl form an involucre around the developing flower.
  • The Hermaphrodite cyathium shows the characteristics measured (length and width of the cyathium involucre and the nectary).

Origin

Late 16th century: from French, or from Latin involucrum, from involvere 'roll in, envelop' (see involve).

For editors and proofreaders

Line breaks: in¦vo|lucre

Share this entry
 

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.