[ mahy-kruh-pahyl ]
/ ˈmaɪ krəˌpaɪl /


Zoology. any minute opening in an ovum through which a spermatozoon can enter, as in many insects.
Botany. the minute orifice or opening in the integuments of an ovule.

Origin of micropyle

1815–25; micro- + Greek pýlē gate


mi·cro·py·lar, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for micropyle

British Dictionary definitions for micropyle

/ (ˈmaɪkrəʊˌpaɪl) /


a small opening in the integuments of a plant ovule through which the male gametes pass
a small pore in the shell of an insect's eggs through which the sperm passes

Derived forms of micropyle

micropylar, adjective

Word Origin for micropyle

C19: from micro- + Greek pulē gate
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Science definitions for micropyle

[ mīkrə-pīl′ ]

A minute opening in the ovule of a seed plant through which the pollen tube usually enters.
A pore in the membrane covering the ovum of some animals through which a spermatozoon can enter.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.