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achene

[ey-keen, uh-keen] /eɪˈkin, əˈkin/
noun, Botany
1.
any small, dry, hard, one-seeded, indehiscent fruit.
Also, akene.
Origin
1835-1845
1835-45; < New Latin achaenium, equivalent to a- a-6 + Greek chain- (stem of chaínein to gape) + Latin -ium -ium
Related forms
achenial
[ey-kee-nee-uh l, uh-kee-] /eɪˈki ni əl, əˈki-/ (Show IPA),
adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for achenial

achene

/əˈkiːn/
noun
1.
a dry one-seeded indehiscent fruit with the seed distinct from the fruit wall. It may be smooth, as in the buttercup, or feathery, as in clematis
Derived Forms
achenial, akenial, adjective
Word Origin
C19: from New Latin achaenium that which does not yawn or open, from a-1 + Greek khainein to yawn
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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achenial in Science
achene also akene
  (ā-kēn')   
A small, dry, one-seeded fruit in which the seed sits free inside the hollow fruit, attached only by the stem of the ovule. Achenes are indehiscent (they do not split open when ripe). The fruits of the sunflower and elm are achenes.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Article for achenial

achene

dry, one-seeded fruit lacking special seams that split to release the seed. The seed coat is attached to the thin, dry ovary wall (husk) by a short stalk, so that the seed is easily freed from the husk, as in buckwheat. The fruits of many plants in the buttercup family and the rose family are achenes.

Learn more about achene with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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