Jisho

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Noun, Suru verb, Intransitive verb, Noun which may take the genitive case particle 'no'
1. approximation; having a close resemblance
Wikipedia definition
2. ApproximationAn approximation is a representation of something that is not exact, but still close enough to be useful. Although approximation is most often applied to numbers, it is also frequently applied to such things as mathematical functions, shapes, and physical laws. Approximations may be used because incomplete information prevents use of exact representations. Many problems in physics are either too complex to solve analytically, or impossible to solve using the available analytical tools.
Read “Approximation” on English Wikipedia
Read “近似” on Japanese Wikipedia
Read “Approximation” on DBpedia

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