The structureless protoplasmic muscle of embryo the primitive foundation of an organ yet unformed that it grows
- scores of undifferentiated cells where an organ or body component develops
- The structureless, protoplasmic tissue of embryo; the ancient foundation of an organ however unformed, from where it develops.
1849, Modern Latin, from Greek blastema "offspring, offshoot," from stem of blastanein "to take forth," from blastos "develop, germ," which will be of unidentified beginning. Associated: Blastemal.
(n.) The structureless, protoplasmic structure of the embryo; the primitive basis of an organ however unformed, that it develops.