Defn: One of the divisions of Crinoidea found fossil in paleozoic rocks; pentremites. They are so named on account of their budlike form.
BLASTOMERE
Blas"to*mere, n. Etym: [Gr. sprout + -mere.] (Biol.)
Defn: One of the segments first formed by the division of the ovum.
Balfour.
BLASTOPHORAL; BLASTOPHORIC
Blas`toph"o*ral, Blas`to*phor"ic, a.
Defn: Relating to the blastophore.
BLASTOPHORE
Blas"to*phore, n. Etym: [Gr. sprout + to bear.] (Biol.)
Defn: That portion of the spermatospore which is not converted into spermatoblasts, but carries them.
BLASTOPORE
Blas"to*pore, n. Etym: [Gr. sprout + E. pore.] (Biol.)
Defn: The pore or opening leading into the cavity of invagination, or archenteron.
Note: [See Illust. of Invagination.] Balfour.