Third-person singular simple present indicative form of require improvement

simple past tense and past participle of require improvement

(stative, UK, meiosis) To be in a state of failing. / Used other than figuratively or idiomatically: see require, improvement.

(UK, formal) No longer needed, redundant. / (euphemistic) Laid off; having one's employment terminated.

(computing) A requirement of a piece of software, such as accessibility or portability, that is not a specific, measurable aspect of performing a particular task.

plural of special service requirement

(aviation, travel industry) A request for special treatment for a passenger such as a special diet or mobility assistance, sent from an agent to an airline, to which a reply will be returned.

(public transport) The number of vehicles required to operate the highest-frequency service on a route.

plural of peak vehicle requirement

plural of non-functional requirement