Meaning of AXIS in English
/ ˈæksɪs; NAmE / noun ( pl. axes / ˈæksiːz; NAmE /)
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.
( technical ) a fixed line against which the positions of points are measured, especially points on a graph :
the vertical / horizontal axis
( geometry ) a line that divides a shape into two equal parts :
an axis of symmetry
The axis of a circle is its diameter
[ usually sing. ] ( formal ) an agreement or alliance between two or more countries :
the Franco-German axis
late Middle English : from Latin , axle, pivot .
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005