geometric isomerism

19 LETTERS · STARTS WITH G

geometric isomerism is a valid 19-letter word worth 27 points in Scrabble and 32 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

G2E1O1M3E1T1R1I1C3I1S1O1M3E1R1I1S1M3

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

DOUBLE WORD → 54TRIPLE WORD → 81

MEANING

What does geometric isomerism mean?