prothalloid

11 LETTERS · 3 SYLLABLES · STARTS WITH P

prothalloid is a valid 11-letter word worth 17 points in Scrabble and 19 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

P3R1O1T1H4A1L1L1O1I1D2

3 + 1 + 1 + 1 + 4 + 1 + 1 + 1 + 1 + 1 + 2 =17 PTS

DOUBLE WORD → 34TRIPLE WORD → 51

MEANING

What does prothalloid mean?