Function: noun
Date: 1926
: a slow movement of the continents on a deep-seated viscous zone within the earth ― compare PLATE TECTONICS
Function: noun
Date: 1926
: a slow movement of the continents on a deep-seated viscous zone within the earth ― compare PLATE TECTONICS
Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012