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English definition of “y-axis”

y-axis

noun [S]     /ˈwaɪˌæksɪs/ GRAPHS & CHARTS
the vertical line of figures along the side of a graph : Annual profits over the last 10 years are plotted on the y-axis. → See also vertical axis → Compare x-axis
(Definition of y-axis noun from the Cambridge Business English Dictionary © Cambridge University Press)
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