in operation

prep_phrase

in operation

prep_phrase
1

Activated; functional; functioning; operating; working.

  • The free market is still in operation, and the number fed from it increases weekly.December 31, 1861, "UNITED STATES STEAMER R.R. COYLER, OFF FORT PICKENS", published in The New York Times in 1862
  • When the engine is in operation, the farther this lever is moved downward toward the driver (referring to as "opening the throttle") the faster the engine runs and the greater the power furnished.1919, For Motor Company, Ford Manual/The Car and Its Operation:

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.