micropyle

micropyle is defined in Webster's Unabridged Dictionary (1913) with 1 sense. The full text of each entry is reproduced verbatim below.

Definitions

  1. 1.(a) An opening in the membranes surrounding the ovum, by which nutrition is assisted and the entrance of the spermatozoa permitted. (b) An opening in the outer coat of a seed, through which the fecundating pollen enters the ovule. -- Mi*crop"y*lar, a.

Source: Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).

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