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gemmule

   Also found in: Dictionary/thesaurus, Medical, Wikipedia 0.01 sec.
gemmule [′je·myül]
(biology)
Any bud formed by gemmation.
(invertebrate zoology)
A cystlike, asexual reproductive structure of many Porifera that germinates when proper environmental conditions exist; it is a protective, overwintering structure which germinates the following spring.
(neuroscience)
A minute dendritic process functioning as a synaptic contact point.
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These bodies have no relation whatever with the production of the eggs or gemmules, as they are formed before th young polypi appear in the cells at the end of the growin branches; as they move independently of the polypi, and d not appear to be in any way connected with them; and a they differ in size on the outer and inner rows of cells, I hav little doubt, that in their functions, they are related rathe to the horny axis of the branches than to the polypi in th cells.
The Voyage of the Beagle by Darwin, Charles View in context
 
 
 
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