prolepsis
noun
pro·lep·sis prō-ˈlep-səs 
plural prolepses prō-ˈlep-ˌsēz
: anticipation: such as
a
: the representation or assumption of a future act or development as if presently existing or accomplished
b
: the application of an adjective to a noun in anticipation of the result of the action of the verb (as in "while yon slow oxen turn the furrowed plain")
proleptic
prō-ˈlep-tik
adjective proleptically
prō-ˈlep-ti-k(ə-)lē
adverb 
Example Sentences
Recent Examples on the Web Usually prolepsis is used to make an ending more tidy by resolving plotlines and squaring futures neatly away. 
Christine Smallwood, Harper's magazine, 16 Sep. 2019
Christine Smallwood, Harper's magazine, 16 Sep. 2019 Word History
Etymology
Greek prolēpsis, from prolambanein to take beforehand, from pro- before + lambanein to take — more at latch
First Known Use
1578, in the meaning defined above