WordReference Random House Unabridged Dictionary of American English © 2026
zy•go•gen•e•sis
(zī′gō jen′ə sis, zig′ō-),USA pronunciation n. [Biol.]
zy•go•ge•net•ic
(zī′gō jə net′ik),USA pronunciation adj.
- Developmental Biologythe formation of a zygote.
- Developmental Biologyreproduction by means of gametes.
- 1945–50; zygo- + -genesis