- 1[usually before noun] connected with the way in which a business, machine, system, etc. works operational activities/costs/difficulties
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- 2[not usually before noun] ready to be used The new airport is now fully operational.
- 3[only before noun] connected with a military operation operational headquarters
NAmE//ˌɑpəˈreɪʃənəli//
adverbSee operational in the Oxford Advanced Learner's DictionaryCheck pronunciation: operational