Definitions
There is 1 meaning of the phrase
Zona Pellucida.
Zona Pellucida - as a noun
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
Example Sentences
"The zona pellucida is a thick membrane that surrounds the mammalian oocyte."
"Fertilization occurs when a sperm penetrates the zona pellucida."
"The zona pellucida plays a crucial role in preventing polyspermy."
"The structure of the zona pellucida varies among different species."
"The zona pellucida acts as a barrier to protect the developing embryo."
