isotac
[ ahy-suh-tak ]
/ ˈaɪ səˌtæk /
noun
a line drawn on a map connecting all points where ice starts to melt at approximately the same period in spring.
Nearby words
isosteric, isosterism, isosthenuria, isostructural, isosulfan blue, isotac, isotach, isotactic, isoteniscope, isothere, isotherm
Origin of isotac
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019