blastema /blastē″mə/ pl. blastemas, blastemata [Gk, bud] , 1. any mass of cells capable of growth and differentiation, specifically the primordial, undifferentiated cellular material from which a particular organ or tissue develops. 2. in certain animals, a group of cells capable of regenerating a lost or damaged part or creating a complete organism in asexual reproduction. 3. the budding or sprouting area of a plant. See also primordium. −blastemic, blastemal, blastematic, adj.
