micropyle

[mahy-kruh-pahyl] /ˈmaɪ krəˌpaɪl/
noun
1.
Zoology. any minute opening in an ovum through which a spermatozoon can enter, as in many insects.
2.
Botany. the minute orifice or opening in the integuments of an ovule.
Origin
1815–25; micro- + Greek pýlē gate
Related forms
micropylar, adjective
Example Sentences for micropyle
micropyle, polar granule and oocyst residuum are absent.
Fertilization occurs through a small opening, the micropyle, usually shortly after the eggs are deposited.
British Dictionary definitions for micropyle
micropyle (ˈmaɪkrəʊˌpaɪl)
 
n
1.  a small opening in the integuments of a plant ovule through which the male gametes pass
2.  a small pore in the shell of an insect's eggs through which the sperm passes
 
[C19: from micro- + Greek pulē gate]
 
micro'pylar
 
adj

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micropyle in Science
micropyle
  (mī'krə-pīl')   
  1. A minute opening in the ovule of a seed plant through which the pollen tube usually enters.

  2. A pore in the membrane covering the ovum of some animals through which a spermatozoon can enter.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Tile value for micropyle

18
0
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