EPITHELIUM

noun

17 Scrabble

20 WWF

E 1

P 3

I 1

T 1

H 4

E 1

L 1

I 1

U 1

M 3

Definition

A membranous tissue composed of one or more layers of cells which forms the covering of most internal and external surfaces of the body and its organs: internally including the lining of vessels and other small cavities, and externally being the skin.