frostline
[ frawst-lahyn, frost- ]
/ ˈfrɔstˌlaɪn, ˈfrɒst- /
noun
the maximum depth at which soil is frozen.
the lower limit of permafrost.
Compare
permafrost table.
Words nearby frostline
frosted liver,
frostfish,
frostflower,
frosting,
frosting on the cake,
frostline,
frostweed,
frostwork,
frosty,
froth,
froth flotation
British Dictionary definitions for frost line
frost line
noun
the deepest point in the ground to which frost will penetrate
the limit towards the equator beyond which frosts do not occur
Scientific definitions for frost line
frost line
In regions where there is no permafrost, the maximum depth to which frost penetrates the ground in the winter.
The lower limit of permafrost.
In tropical regions, the elevation below which frost never occurs.