ZYGOTE Scrabble 19 Words With Friends 19 Definition noun (genetics) the diploid cell resulting from the union of a haploid spermatozoon and ovum (including the organism that develops from that cell). — synonyms: fertilized_ovum See all 20 words you can make from ZYGOTE → 6-letter words Words starting with Z Words ending with E ← Unscramble different letters