Operation

オペ

ope

(surgical procedure)

オペレーション

operēshon

(surgical procedure)

作戦

sakusen

(military campaign)

作業

sagyō

(method by which a device performs its function)

手術

shujutsu

(surgical procedure)

操作

sōsa

(method by which a device performs its function)

演算

enzan

(procedure for generating a value from one or more other values)