adjective Date: circa 1898 of, relating to, or constituting a verb tense that is traditionally formed in English with will have and shall have and that expresses completion of an action by a specified time that is yet to come, ~ noun
FUTURE PERFECT
Meaning of FUTURE PERFECT in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012