Definitions for future perfect
Random House Webster's College Dictionary
fu′ture per′fect(adj.)
of or designating a verb tense or form indicating that the action or state expressed by the verb will be completed by or extend up to a time in the future, and consisting in English of will have followed by a past participle, as will have finished in
I will have finished it by then.
Category: Grammar
(n.)the future perfect tense.
Category: Grammar
a form in this tense.
Category: Grammar
Princeton's WordNet
future perfect, future perfect tense(noun)
a perfective tense used to describe action that will be completed in the future
"`I will have finished' is an example of the future perfect"
Wiktionary
future perfect(Noun)
A tense that expresses action completed at some time in the future; in English it is formed by use of will have (or shall have) and a past participle
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