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corolla

[kuh-rol-uh]
noun Botany.
  1. the inner envelope of floral leaves of a flower, usually of delicate texture and of some color other than green; the petals considered collectively.
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Origin of corolla

1665–75; < Latin: little garland, equivalent to corōn(a) garland, corona + -la diminutive suffix; see -ule
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for corolla

corolla

noun
  1. the petals of a flower collectively, forming an inner floral envelopeCompare calyx
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Word Origin for corolla

C17 dim. of L corōna crown
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for corolla

n.

1670s, "crown," from Latin corolla, diminutive of corona "crown, garland" (see crown (n.)). Botanical use is from 1753.

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Online Etymology Dictionary, © 2010 Douglas Harper

corolla in Science

corolla

[kə-rŏlə, kə-rōlə]
  1. The petals of a flower considered as a group or unit. See more at flower.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.