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Definition of Micropyle
1. Noun. Minute opening in the wall of an ovule through which the pollen tube enters.
Definition of Micropyle
1. n. An opening in the membranes surrounding the ovum, by which nutrition is assisted and the entrance of the spermatozoa permitted.
Definition of Micropyle
1. [n -S]
Medical Definition of Micropyle
1. 1. Small hole or aperture in the protective tissue surrounding a plant ovule, through which the pollen tube enters at fertilization. Develops into a small hole in the seed coat through which, in many cases water enters at germination. 2. Perforation in the shell (chorion) of an insect egg through which the sperm enters at fertilization. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)
Lexicographical Neighbors of Micropyle
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