-th- also ˈīzə-
plural -s
: a line drawn on a map or chart to connect points having equal numerical values (as of temperature, elevation, or density of population)

Word History


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

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Dictionary Entries Near isarithm

Cite this Entry

“Isarithm.” Dictionary, Merriam-Webster, Accessed 29 Feb. 2024.

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