Meaning of “the future perfect” in the English Dictionary

british dictionary

(Definition of “the future perfect” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"future perfect" in American English

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future perfectnoun [ U ]

us /ˈfju·tʃər pɜr·fIkt/

grammar the tense formed using "will have" or "shall have" with a past participle to show that an action will be completed by a particular time in the future:

"I will have left by noon" is in the future perfect.

(Definition of “future perfect” from the Cambridge Academic Content Dictionary © Cambridge University Press)