will have been approximating
Future perfect progressive conjugation of approximate. There are other translations for this conjugation.

approximate

The word "approximate" has two pronunciations with different meanings.
approximate
(to be similar; often used with "to"), (to be similar to)
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UK
SpanishDictionary.com Phonetic Alphabet (SPA)
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approximate
(estimated)
US
SpanishDictionary.com Phonetic Alphabet (SPA)
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International Phonetic Alphabet (IPA)
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English Alphabet (ABC)
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UK
SpanishDictionary.com Phonetic Alphabet (SPA)
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International Phonetic Alphabet (IPA)
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English Alphabet (ABC)
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Learn more about pronunciation and the English alphabet.
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