negative geotropism

19 LETTERS · STARTS WITH N

negative geotropism is a valid 19-letter word worth 27 points in Scrabble and 33 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

N1E1G2A1T1I1V4E1G2E1O1T1R1O1P3I1S1M3

1 + 1 + 2 + 1 + 1 + 1 + 4 + 1 + 0 + 2 + 1 + 1 + 1 + 1 + 1 + 3 + 1 + 1 + 3 =27 PTS

DOUBLE WORD → 54TRIPLE WORD → 81

MEANING

What does negative geotropism mean?