0 the line of figures or coordinates that are arranged from left to right on a graph or map:
1 a horizontal line that forms one side of a coordinate plane (= region formed by two number lines)
2 the horizontal line of figures along the bottom of a graph, often representing time:
The x-axis represents expenditure and the y-axis profit.
They needed a better method of specifying dates along the x-axis.
The x-axis is complexity, ranging from uncomplex to very complex.
The horizontal axis (x-axis) shows the distance travelled horizontally by the wave.
The y-axis in the plot is the average score and the x-axis represents the different variant sets.
The analysis is based on a straightforward perturbation about uniform flow of unit dimensionless speed along the x-axis.
The more labeled training sentences the parser receives (x-axis) the better its performance on test data (y-axis).
For a sufficiently large negative anisotropy, the cumulative effect can evenly suppress the non-resonant filamentation mode along x-axis.
In each plot, the magnitude of the intercept is plotted along the y-axis, and the country-level variable along the x-axis.
