isopag

noun

iso·​pag

plural -s

: an equiglacial line on a map or chart that connects the points where ice is present for approximately the same number of days in winter

Word History

Etymology

is- + -pag (from Greek pagos frost; akin to Greek pēgnynai to fasten)

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

• More than 250,000 words that aren't in our free dictionary
• Expanded definitions, etymologies, and usage notes
• Advanced search features
• Ad free!