Wiktionary
real axis
n. (context mathematics English) The horizontal line in the complex plane, every point on which corresponds to a real number
Usage examples of "real axis".
It is obtained by plotting vector sums of points on an Argand plane-that is to say, with one real axis and one imaginary axis.
It is obtained by plotting vector sums of points on an Argand plane -- that is to say, with one real axis and one imaginary axis.
The real axis of evil in America is the genius of our marketing and the gullibility of our people.