DCHP-1 Online
perma-ice 
n. See permafrost 1957 quote.
See also: permafrost
- 1947 Perma-ice is to be found throughout the year about one and one-half feet below the surface, filling the low, grass areas with muskeg water. . . .
- 1947 Perma-ice is to be found throughout the year about one and one-half feet below the surface, filling the low, grass areas with muskeg water. . . .