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isopag

American  
[ahy-suh-pag] / ˈaɪ səˌpæg /

noun

  1. a line drawn on a map connecting all points where ice exists at approximately the same period during winter.

Etymology

Origin of isopag

iso- + -pag < Greek págos frost

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.