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The entrance of more than one sperm into the oocyte.
polyspermy/poly·sper·my/ (-sper´me) fertilization of an oocyte by more than one spermatozoon; occurring normally in certain species (physiologic p.) and sometimes abnormally in others (pathologic p.) .
The entry of several sperm into one ovum during fertilization.
fertilization of an ovum by more than one spermatozoon; occurring normally in certain species (physiological polyspermy) and sometimes abnormally in others (pathological polyspermy).