future perfect

Grammar
adjective
  1. perfect with respect to a temporal point of reference in time to come; completed with respect to a time in the future, especially when incomplete with respect to the present.
  2. noting or pertaining to a tense or other verb formation or construction with such reference.
noun
  1. the future perfect tense.
  2. another verb formation or construction with future perfect meaning.
  3. a form in the future perfect, as He will have come.

Origin of future perfect

First recorded in 1895–1900
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for future perfect

future perfect

adjective
  1. denoting a tense of verbs describing an action that will have been performed by a certain time. In English this is formed with will have or shall have plus the past participle
noun
    1. the future perfect tense
    2. a verb in this tense
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012