Y-axis Definition
wīăksĭs
y-axes
noun
The vertical, or more nearly vertical, axis in a plane Cartesian coordinate system, along which the ordinate is measured.
Webster's New World
A similar axis that is perpendicular to the x-axis and the z-axis of a three-dimensional Cartesian coordinate system.
Webster's New World
Other Word Forms of Y-axis
Noun
Singular:
y-axis
Plural:
y-axes