1. (genetics) the diploid cell resulting from the union of a haploid spermatozoon and ovum (including the organism that develops from that cell); [syn: zygote, fertilized ovum]
WordNet (r) 3.0 (2006):
fertilized ovum
n 1: (genetics) the diploid cell resulting from the union of a
haploid spermatozoon and ovum (including the organism that
develops from that cell) [syn: zygote, fertilized ovum]