Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of micropyle is as below...

Micropyle :: Micropyle (n.) An opening in the membranes surrounding the ovum, by which nutrition is assisted and the entrance of the spermatozoa permitted..

Micropyle :: Micropyle (n.) An opening in the outer coat of a seed, through which the fecundating pollen enters the ovule..

Orthotropous :: Orthotropous (a.) Having the axis of an ovule or seed straight from the hilum and chalaza to the orifice or the micropyle; atropous.

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