embryonic cell

NOUN
14 LETTERS · STARTS WITH E

embryonic cell is a valid 14-letter word worth 24 points in Scrabble and 30 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
E1M3B3R1Y4O1N1I1C3C3E1L1L1
1 + 3 + 3 + 1 + 4 + 1 + 1 + 1 + 3 + 0 + 3 + 1 + 1 + 1 =24 PTS
DOUBLE WORD → 48TRIPLE WORD → 72
MEANING

What does embryonic cell mean?