adjective. ['ˌɑːpɝˈeɪʃənəl'] fit or ready for use or service.
adjective. ['ˌɑːpɝˈeɪʃənəl'] (military) of or intended for or involved in military operations.
adjective. ['ˌɑːpɝˈeɪʃənəl'] being in effect or operation.