Search Result for "meristem": 
Wordnet 3.0

NOUN (1)

1. undifferentiated tissue from which new cells are formed, as at the tip of a stem or root; 



The Collaborative International Dictionary of English v.0.48:

Meristem \Mer"i*stem\, n. [Gr. ? divisible.] (Bot.)
   A tissue of growing cells, or cells capable of further
   division.
   [1913 Webster]


WordNet (r) 3.0 (2006):

meristem
    n 1: undifferentiated tissue from which new cells are formed, as
         at the tip of a stem or root