ˌfuture ˈperfect noun technical the future perfect technical SLGthe form of a verb that shows that the action described will be complete before a particular time in the future, formed in English by ‘will have’ or ‘shall have’, as in ‘I will have finished by 5 o’clock.’ 〔语法中的〕将来完成式[时]
—future perfect adjectiveadj