exteroception

NOUN
13 LETTERS · STARTS WITH E

exteroception is a valid 13-letter word worth 24 points in Scrabble and 27 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
E1X8T1E1R1O1C3E1P3T1I1O1N1
1 + 8 + 1 + 1 + 1 + 1 + 3 + 1 + 3 + 1 + 1 + 1 + 1 =24 PTS
DOUBLE WORD → 48TRIPLE WORD → 72
MEANING

What does exteroception mean?