epithelial cell

NOUN
15 LETTERS · STARTS WITH E

epithelial cell is a valid 15-letter word worth 21 points in Scrabble and 26 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
E1P3I1T1H4E1L1I1A1L1C3E1L1L1
1 + 3 + 1 + 1 + 4 + 1 + 1 + 1 + 1 + 1 + 0 + 3 + 1 + 1 + 1 =21 PTS
DOUBLE WORD → 42TRIPLE WORD → 63
MEANING

What does epithelial cell mean?