noun isa·rithm \ˈīsəˌrithəm, -th- also ˈīzə-\

Definition of isarithm



  1. :  a line drawn on a map or chart to connect points having equal numerical values (as of temperature, elevation, or density of population)

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Origin and Etymology of isarithm

International Scientific Vocabulary is- + -arithm (from Greek arithmos number); originally formed as German isarithmus — more at arithmo-

Seen and Heard

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quaintly unconventional or refined

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