A period of time in which suitable action can achieve success.

Alternative form of window of opportunity

(military) A target onto which one's attack is diverted as soon as it is seen or becomes known. / (figuratively, by extension) An object to which one's efforts are diverted as soon as it becomes known.

(historical, education) Synonym of opportunity class (“separate class for teaching backward children”)

plural of opportunity room

(Australia, education) A separate primary-school class for teaching gifted children. / (historical, education) A separate class for teaching backward children.

plural of opportunity class

The practice of servicing equipment when it is convenient to do so, rather than on a fixed schedule.

People are more likely to steal anything if presented with a convenient opportunity to do so.

plural of golden opportunity