rootcap

Century Dictionary and Cyclopedia

1. n. A cap-like layer of parenchymatous cells which occurs at the tip of growing roots. It may be several or many or only two or three layers of cells thick, the cells composing it being older, firmer, and in part effete, and serving to protect the active growing-point, which is immediately behind it.

Wiktionary

1. n. A mass of parenchymatous cells that covers and protects the growing cells at the end of a root.

GNU Webster's 1913

1. n. (Bot.) A mass of parenchymatous cells which covers and protects the growing cells at the end of a root; a pileorhiza.

WordNet 3.0

1. n. thimble-shaped mass of cells covering and protecting the growing tip of a root