isotac

noun iso·tac

Definition of isotac

plural

-s

  1. :  an equiglacial line on a map or chart connecting points where ice melts at the same time in spring

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Origin and Etymology of isotac

is- + -tac (from Greek takēnai to melt, be dissolved, passive aortic infinitive of tēkein to melt, dissolve) — more at thaw


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