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English definition of “approximation”

approximation

noun [C]     /əˌprɒk.sɪˈmeɪ.ʃən/ US  /-ˌprɑːk-/ formal
a guess of a number that is not exact but that is close: Could you give me a rough approximation of how many people will be coming? What he said bore no approximation whatsoever to the truth (= was not at all like the truth).Guesses and assumptions Grammar:Approximations (around four o’clock)When we speak, we often try not to be too exact or factual because it can sound very direct. As a result, we add expressions to make what we say more approximate or vague.See more
(Definition of approximation noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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