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isotach

noun
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iso·​tach | \ -ˌtak \
plural -s

Definition of isotach

: a line on a map or chart connecting points of equal wind speed

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History and Etymology for isotach

International Scientific Vocabulary is- + -tach (from Greek tachys quick)

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“Isotach.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/isotach. Accessed 29 January 2020.

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