1
Stage 1 of 3
opus
Latin · ancient
"work"
work
2
Stage 2 of 3
operari
Latin · ancient
"to work, to labor"
to work, to labor, from opus
3
Stage 3 of 3
operate
English · 1600s
"to function, or to control a machine or process"
settled as the English word for functioning or controlling a machine or process
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