Added 9 October 2026 operating /ˈɑpəɹeɪtɪŋ/ adjective Categories: Describing WordsEveryday Words adjective ! Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about operating at Wordnik → Where our words come from → Involved in a kind of operation. the operating conditions of the oxidation pond Being in effect or operation. de facto apartheid is still operational even in the `new' African nations Related Words: operationaloperativefunctionworkingoperationfunctioningoperationalizationserviceabilityfunctionaloperatorusing Back to today's word