![](http://image.absoluteastronomy.com/images//topicimages/noimage.gif)
Meristem
WordNet
noun
(1) Undifferentiated tissue from which new cells are formed, as at the tip of a stem or root
WiktionaryText
Etymology
From the . First used in 1858, by Karl Wilhelm von Nägeli (1817-1891) in his Beiträge zur Wissenschaftlichen Botanik.