Mi"cro*pyle (?), n. [Micro- + Gr. gate, orifice: cf. F. micropyle.] Biol. (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.
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Mi*crop"y*lar (#), a.
© Webster 1913.