Meaning of “y-axis” in the English Dictionary

american-english dictionary

"Y-axis" in American English

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Y-axisnoun [ C ]

/ˈwɑɪˌæk·sɪs/ plural Y-axes /ˈwɑɪˌæk·siz/

mathematics a vertical line that forms one side of a coordinate plane (= region formed by two number lines)

(Definition of “Y-axis” from the Cambridge Academic Content Dictionary © Cambridge University Press)

"y-axis" in Business English

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y-axisnoun [ S ]

uk /ˈwaɪˌæksɪs/ us 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.
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(Definition of “y-axis” from the Cambridge Business English Dictionary © Cambridge University Press)