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Webster's Dictionary (1865)

Blas-tē'ma, n.

noun

n. [Gr. βλάστημα, bud, sprout.]

  1. (Bot.) The embryo in a seed apart from the cotyledon.
  2. (Zoöl.) The primitive basis of an organ yet unformed, from which it proceeds or grows. “The blastema of bone is a sub-transparent glairy matter, containing a multitude of minute corpuscles.” Owen.