propagule

[prop-uh-gyool]
noun
Botany, Mycology. any structure capable of being propagated or acting as an agent of reproduction.
Also, propagulum [proh-pag-yuh-luhm] .


Origin:
1855–60; < Neo-Latin propāgulum, derivative of propāgō shoot, runner; see propagate, -ule

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Collins
World English Dictionary
propagule or propagulum (ˈprɒpəˌɡjuːl, prəʊˈpæɡjʊləm)
 
n
a plant part, such as a bud, that becomes detached from the rest of the plant and grows into a new plant
 
[C20: from propag(ate) + -ule]
 
propagulum or propagulum
 
n
 
[C20: from propag(ate) + -ule]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
propagule   (prŏp'ə-gyl')  Pronunciation Key 
  1. Any of various structures that can give rise to a new individual organism, especially parts of a plant that serve as means of vegetative reproduction, such as corms, tubers, offsets, or runners. Seeds and spores are also propagules.

  2. A elongated, dart-shaped seedling of various mangrove species growing in swampy habitats. A propagule develops from a seed that germinates while still attached to the parent tree. The parent supplies the seedling with nutrients and water until it becomes heavy and drops off. Its pointed end sticks in the mud or it floats away to colonize another area.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
Propagule sources are also an important determinant of diversity and invasive patterns.
Propagule dispersal distance and the size and spacing of marine reserves.
Eradication requires either depleting or removing the propagule bank, which is not a trivial task.
Propagule: any part of a plant that can give rise to a new individual and aids in dispersal of the species.
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