noun mer·i·stem \ˈmer-ə-ˌstem\

Definition of MERISTEM

:  a formative plant tissue usually made up of small cells capable of dividing indefinitely and giving rise to similar cells or to cells that differentiate to produce the definitive tissues and organs
mer·i·ste·mat·ic \ˌmer-əs-tə-ˈma-tik\ adjective
mer·i·ste·mat·i·cal·ly \-ti-k(ə-)lē\ adverb

Origin of MERISTEM

Greek meristos divided (from merizein to divide, from meros) + English -em (as in system)
First Known Use: 1872
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears