Function: noun
Date: 1914
: the mass of a body exclusive of additional mass the body acquires by its motion according to the theory of relativity
Function: noun
Date: 1914
: the mass of a body exclusive of additional mass the body acquires by its motion according to the theory of relativity
Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012