笑しょう気き麻ま酔すい

しょ

う

き

ま

す

い

Meanings

1

noun

nitrous oxide anesthesia; laughing gas anesthesia

Medical term for anesthesia using nitrous oxide (laughing gas).

laugh

気spirit, mind, air

麻hemp, flax, numb

酔drunk, feel sick, poisoned

笑しょう気き
笑気 means 'laughing gas' (nitrous oxide) itself, while 笑気麻酔 refers to the anesthesia using it.
麻ま酔すい
麻酔 is the general term for anesthesia; 笑気麻酔 specifies the type using nitrous oxide.

Compound of 笑気 (nitrous oxide, literally 'laughing gas') and 麻酔 (anesthesia).