WordReference Random House Unabridged Dictionary of American English © 2026
ec•to•gen•e•sis
(ek′tō jen′ə sis),USA pronunciation n. [Biol.]
ec•to•ge•net•ic
(ek′tō jə net′ik),USA pronunciation adj.
- Biologydevelopment outside the body, as of an embryo in an artificial environment.
- Neo-Latin; see ecto-, -genesis
- 1905–10;