urochordata

NOUN
11 LETTERS · STARTS WITH U

urochordata is a valid 11-letter word worth 17 points in Scrabble and 18 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
U1R1O1C3H4O1R1D2A1T1A1
1 + 1 + 1 + 3 + 4 + 1 + 1 + 2 + 1 + 1 + 1 =17 PTS
DOUBLE WORD → 34TRIPLE WORD → 51
MEANING

What does urochordata mean?