— blastular , adj. — blastulation /blas'cheuh lay"sheuhn/ , n.
/blas"cheuh leuh/ , n. , pl. blastulas, blastulae /-lee'/ . Embryol.
the 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 .
[ 1885-90; blast ( ós ) bud, sprout + NL -ula -ULE ]