Meaning of ZONA PELLUCIDA

Pronunciation:			'zownu pu'loosidu
WordNet Dictionary
	Definition:		[n]  thick membrane around the mammalian ovum; can be penetrated by one sperm in the fertilization process; usually remains around the fertilized egg until it is implanted in the wall of the uterus
	See Also:		zona, zone
Biology Dictionary
	Definition:		The elastic outer covering of an ovum.