Where does “オペレーション” come from?

オペレーション (Japanese) comes from English operation, from Middle English operacioun, from Old French operacion, from Latin operātiō, from Latin -tiō, from Latin dissertātiō, from Latin dissertus, from Latin disserere — small stone, pebble; gravel, rubble.

オペレーション (Japanese): operation method or practice

Definitions

operation method or practice

Ancestry of “オペレーション”, step by step

Step	Language	Word	Meaning
1	English	operation	The method by which a device performs its...
2	Middle English	operacioun	operation
3	Old French	operacion	action; act; operation
4	Latin	operātiō	operation
5	Latin	-tiō	tion, -ation, -ing
6	Latin	dissertātiō	(spoken) dissertation, discourse, disquisition
7	Latin	dissertus	arranged, disposed; explained
8	Latin	disserere	second-person singular future passive indicative...
9	Latin	dis-	asunder, apart, in two; reversal, removal;...
10	Latin	calceus	shoe
11	Latin	calx	limestone; chalk; the finish line
12	Ancient Greek	χάλιξ	small stone, pebble; gravel, rubble

Words derived from “オペレーション”

オペ

Every word from Ancient Greek χάλιξ →Every word from Latin -tiō →Every word from Latin dis- →