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micropyle

   Also found in: Medical, Encyclopedia, Wikipedia, Hutchinson 0.01 sec.
mi·cro·pyle  (mkr-pl)
n.
1. Botany A minute opening in the ovule of a seed plant through which the pollen tube usually enters.
2. Zoology A pore in the membrane covering the ovum of some animals through which a spermatozoon can enter.

[micro- + Greek pul, gate.]

micro·pylar adj.

micropyle [ˈmaɪkrəʊˌpaɪl]
n
1. (Life Sciences & Allied Applications / Botany) a small opening in the integuments of a plant ovule through which the male gametes pass
2. (Life Sciences & Allied Applications / Zoology) a small pore in the shell of an insect's eggs through which the sperm passes
[from micro- + Greek pulē gate]
micropylar  adj

micropyle  (mkr-pl)
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.
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.micropyle - minute opening in the wall of an ovule through which the pollen tube entersmicropyle - minute opening in the wall of an ovule through which the pollen tube enters
aperture - a natural opening in something
ovule - a small body that contains the female germ cell of a plant; develops into a seed after fertilization


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9 [micro]m diameter) that has a fairly conspicuous opening or micropyle to enable sperm penetration.
In teleosts, the only common aspect is the absence of an acrosome, which has been related to the presence of a micropyle in the egg (Riehl, 1997).
57) oblong, bearing conspicuous micropyle at narrow end, opposite end is papillose; seed coat thick, woody, comprising nearly 20--25% of the diameter of the seed; empty individuals are dark brown to black in color, some specimens are reddish in color due to the reflectance of white endosperm within the seed; examination of endosperm from seeds shows cells intact; embryo present (Fig.
 
 
 
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