Meaning of AXIS in English

AXIS

/ ˈæksɪs; NAmE / noun ( pl. axes / ˈæksiːz; NAmE /)

1.

an imaginary line through the centre of an object, around which the object turns :

Mars takes longer to revolve on its axis than the earth.

2.

( technical ) a fixed line against which the positions of points are measured, especially points on a graph :

the vertical / horizontal axis

3.

( geometry ) a line that divides a shape into two equal parts :

an axis of symmetry

The axis of a circle is its diameter

4.

[ usually sing. ] ( formal ) an agreement or alliance between two or more countries :

the Franco-German axis

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WORD ORIGIN

late Middle English : from Latin , axle, pivot .

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.