inhalation general anesthetic

NOUN
29 LETTERS · STARTS WITH I

inhalation general anesthetic is a valid 29-letter word worth 36 points in Scrabble and 42 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
I1N1H4A1L1A1T1I1O1N1G2E1N1E1R1A1L1A1N1E1S1T1H4E1T1I1C3
1 + 1 + 4 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 0 + 2 + 1 + 1 + 1 + 1 + 1 + 1 + 0 + 1 + 1 + 1 + 1 + 1 + 4 + 1 + 1 + 1 + 3 =36 PTS
DOUBLE WORD → 72TRIPLE WORD → 108
MEANING

What does inhalation general anesthetic mean?