[ mahy-kruh-pahyl ]

  1. Zoology. any minute opening in an ovum through which a spermatozoon can enter, as in many insects.

  2. Botany. the minute orifice or opening in the integuments of an ovule.

Origin of micropyle

1815–25; micro- + Greek pýlē gate

Other words from micropyle

  • mi·cro·py·lar, adjective

Words Nearby micropyle

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How to use micropyle in a sentence

British Dictionary definitions for micropyle


/ (ˈmaɪkrəʊˌpaɪl) /

  1. a small opening in the integuments of a plant ovule through which the male gametes pass

  2. a small pore in the shell of an insect's eggs through which the sperm passes

Origin of micropyle

C19: from micro- + Greek pulē gate

Derived forms of micropyle

  • micropylar, adjective

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

Scientific definitions for micropyle


[ krə-pīl′ ]

  1. A minute opening in the ovule of a seed plant through which the pollen tube usually enters.

  2. 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.