- a line on a map connecting points that have the same mean winter temperature.
Origin of isocheim
1860–65; iso- + -cheim < Greek cheîma winter cold
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- a line on a map connecting places with the same mean winter temperature
C19: from iso- + Greek kheima winter weather