Function: noun
Date: circa 1909
: a number that has no imaginary part <the set of all real numbers comprises the rationals and the irrationals>
Function: noun
Date: circa 1909
: a number that has no imaginary part <the set of all real numbers comprises the rationals and the irrationals>
Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012