Let say a person says: *we will get married in 2 years*
1) In 2 years means more than 2 years but less than 3 years from now.
2) Less than 2 years.
3) Exactly 2 years from now.
Hope you understand my question.
It is imprecise. If I said those words, I would probably be thinking of something between 21 and 27 months.
(Actually, if I said those words, I'd also be thinking about the need to get a divorce first.)