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English definition of “axis”

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axis

noun [C] uk   /ˈæk.sɪs/ ( plural axes   /ˈæk.siːz/   ) us  

axis noun [C] (IMAGINARY LINE)

a real or imaginary straight line going through the centre of a object that is spinning, or a line that divides a symmetrical shape into two equal halves: The Earth revolves around the axis that joins the North and South Poles. The diameter of a circle is also an axis. a fixed line on a graph used to show the position of a point: Plot distance on the vertical y-axis against time on the horizontal x-axis.

axis noun [C] (BONE)

specialized anatomy, medical the second of the small bones in the neck that form the spine and support the skull
See also

axis noun [C] (POLITICAL AGREEMENT)

an agreement between governments or politicians to work together to achieve a particular aim: the Franco-German axis
(Definition of axis from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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