n.
Pronunciation: ˌ sü-p ə r- ˌ fe-k ə n- ' d ā -sh ə n, - ˌ f ē -
Function: noun
Date: circa 1855
1 : successive fertilization of two or more ova from the same ovulation especially by different sires
2 : fertilization at one time of a number of ova excessive for the species