dehisce

[dih-his]
verb (used without object), dehisced, dehiscing.
to burst open, as capsules of plants; gape.

Origin:
1650–60; < Latin dēhiscere to gape, part, equivalent to dē- de- + hiscere to gape, yawn (hi(āre) to yawn + -scere inchoative suffix)

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World English Dictionary
dehisce (dɪˈhɪs)
 
vb
(intr) (of fruits, anthers, etc) to burst open spontaneously, releasing seeds, pollen, etc
 
[C17: from Latin dēhiscere to split open, from de- + hiscere to yawn, gape]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

dehisce de·hisce (dĭ-hĭs')
v. de·hisced, de·hisc·ing, de·hisc·es
To rupture or break open, as a surgical wound.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
dehiscence   (dĭ-hĭs'əns)  Pronunciation Key 
The spontaneous opening at maturity of a plant structure, such as a fruit, anther, or sporangium, to release its contents. Compare indehiscence.

dehisce verb
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
The anthers of the triploid plants usually dehisce, but the plants are highly
  sterile.
They dehisce by a longitudinal cleft twisting into a spiral after flowering.
Capsules dehisce in autumn, releasing thousands of seeds, which are primarily
  wind-dispersed.
Some herbaceous species have capsules or fruits that dehisce explosively.
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