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umbel

[uhm-buh l] /ˈʌm bəl/
noun, Botany.
1.
an inflorescence in which a number of flower stalks or pedicels, nearly equal in length, spread from a common center.
Origin of umbel
1590-1600
1590-1600; < Latin umbella a sunshade, parasol, derivative of umbra shadow, shade; for formation see castellum
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for umbel
Historical Examples
  • Here the pedicels are sometimes called the Rays of the umbel.

  • The bract and pedicels of the umbel all spring from the extremity of a peduncle 1½in.

  • The point at the top of the stalk from which the blossoms grow is called the "umbel."

    Wildflowers of the Farm Arthur Owens Cooke
  • They grew from an umbel, and the Primrose is closely related to the Cowslip.

    Wildflowers of the Farm Arthur Owens Cooke
  • The easiest to obtain is aurea, which grows about one foot high and has an umbel of pretty flowers, in July.

    The Book of Bulbs Samuel Arnott
  • Thus, a compound umbel is produced when the pedicels of an umbel are themselves umbellate.

    Field and Woodland Plants

    William S. Furneaux
  • They are both strong-smelling plants with bulbous roots, radical leaves, and flowers arranged in an umbel with membranous spathes.

    Field and Woodland Plants

    William S. Furneaux
  • In like manner, a head of flowers becomes sometimes converted into an umbel.

    Vegetable Teratology

    Maxwell T. Masters
  • Oxlip, oks′lip, n. a species of primrose, having its flowers in an umbel on a stalk like the cowslip.

  • The maritime variety differs from this in having fleshy leaves, and the umbel convex above when in fruit.

    The Sea Shore William S. Furneaux
British Dictionary definitions for umbel

umbel

/ˈʌmbəl/
noun
1.
an inflorescence, characteristic of umbelliferous plants, in which the flowers arise from the same point in the main stem and have stalks of the same length, to give a cluster with the youngest flowers at the centre
Derived Forms
umbellate (ˈʌmbɪlɪt; -ˌleɪt), umbellar (ʌmˈbɛlə), umbellated, adjective
umbellately, adverb
Word Origin
C16: from Latin umbella a sunshade, from umbra shade
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
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Word Origin and History for umbel

1590s, from Latin umbella "parasol," diminutive of umbra (see umbrage).

Online Etymology Dictionary, © 2010 Douglas Harper
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umbel in Science
umbel
  (ŭm'bəl)   
A flat or rounded indeterminate inflorescence in which the individual flower stalks (called pedicels) arise from about the same point on the stem at the tip of the peduncle. The geranium, milkweed, and onion have umbels. Umbels usually show centripetal inflorescence, with the lower or outer flowers blooming first.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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