| 释义 |
WordReference Random House Unabridged Dictionary of American English © 2024blas•tu•la (blas′chə lə),USA pronunciation n., pl. -las, -lae (-lē′).USA pronunciation [Embryol.]- Developmental Biologythe early developmental stage of an animal, following the morula stage and consisting of a single, spherical layer of cells enclosing a hollow, central cavity. Cf. blastocyst.
- Greek blast(ós) bud, sprout + Neo-Latin -ula -ule
- Neo-Latin
- 1885–90;
blas′tu•lar, adj. blas•tu•la•tion (blas′chə lā′shən),USA pronunciation n. |