1 adj A machine or piece of equipment that is operational is in use or is ready for use.
usu v-link ADJ
The whole system will be fully operational by December 1995.
2 adj Operational factors or problems relate to the working of a system, device, or plan.
usu ADJ n
The nuclear industry was required to prove that every operational and safety aspect had been fully researched.
operationally adv ADV adj, ADV after v
The device had been used operationally some months previously.
Translation English Cobuild Collins Dictionary
functional, going, in working order, operative, prepared, ready, up and running, usable, viable, workable, working
broken, ineffective, inoperative, kaput (informal) nonfunctional, on the blink (slang) out of order
English Collins Dictionary - English synonyms & Thesaurus
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"Collins Cobuild English Dictionary for Advanced Learners 4th edition published in 2003 © HarperCollins Publishers 1987, 1995, 2001, 2003 and Collins A-Z Thesaurus 1st edition first published in 1995 © HarperCollins Publishers 1995"