Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

  

axis

noun [C] (IN MATHEMATICS)
 
 
/ˈæk.sɪs/ (plural axes
 
/ˈæk.siːz/
 
)

Definition

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.Parts of geometrical shapes 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.
(Definition of axis noun (IN MATHEMATICS) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of axis