Meaning of APPROXIMATION in English

APPROXIMATION

ap ‧ prox ‧ i ‧ ma ‧ tion AC /əˌprɒksəˈmeɪʃ ə n, əˌprɒksɪˈmeɪʃ ə n $ əˌprɑːk-/ BrE AmE noun [uncountable and countable]

[ Word Family: verb : ↑ approximate ; noun : ↑ approximation ; adverb : ↑ approximately ; adjective : ↑ approximate ]

1 . a number, amount etc that is not exact, but is almost correct SYN estimate

approximation of

an approximation of the total

a rough/crude approximation (=one that is not very exact)

Could you give us a rough approximation of the cost?

a good/close/reasonable approximation

2 . something that is similar to another thing, but not exactly the same

approximation of/to

It was the nearest approximation to a crisis she’d ever experienced.

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.