n.
Pronunciation: ' m ī -kr ə - ˌ p ī (- ə )l
Function: noun
Etymology: French, from micr- + Greek pyl ē gate
Date: 1821
1 : a minute opening in the integument of an ovule of a seed plant
2 : a differentiated area of surface in an egg through which a sperm enters
– mi · cro · py · lar \ ˌ m ī -kr ə - ' p ī -l ə r \ adjective