[verb] [formal]Student numbers this year are expected to approximate 5000 (= to be about 5000). [L only +noun]The newspaper reports of the discussion only roughly approximated to (= were not exactly the same as) what was actually said. [I usually + adverb or preposition]
APPROXIMATE
Meaning of APPROXIMATE in English
Cambridge English vocab. Кембриджский английский словарь. 2012