An axis (plural ''axes'') is an imaginary line around which an object rotates or is symmetrical. Axis may also refer to:

Mathematics

* Axis of rotation: see

rotation around a fixed axis Rotation around a fixed axis is a special case of rotational motion. The fixed- axis hypothesis excludes the possibility of an axis changing its orientation and cannot describe such phenomena as wobbling or precession. According to Euler's ...

* Axis (mathematics), a designator for a Cartesian-coordinate dimension * Axis, a line generated by basis vector in a linear algebra

Politics

Axis powers The Axis powers, ; it, Potenze dell'Asse ; ja, 枢軸国 ''Sūjikukoku'', group=nb originally called the Rome–Berlin Axis, was a military coalition that initiated World War II and fought against the Allies. Its principal members were ...

of World War II, 1936–1945. *

Axis of evil The phrase "axis of evil" was first used by U.S. President George W. Bush and originally referred to Iran, Iraq, and North Korea. It was used in Bush's State of the Union address on January 29, 2002, less than five months after the 9/11 at ...

(first used in 2002), U.S. President George W. Bush's description of Iran, Iraq, and North Korea *

Axis of Resistance The term ''Axis of Resistance'' ( fa, محور مقاومت, translit=mehvar–e moqâvemat, ) refers to an anti-Western, anti-Israeli and anti-Saudi political and informal military alliance between Iran, Palestine, the Syrian Government and ...

(first used in 2002), the Shia alliance of Iran, Syria, and Hezbollah *

Political spectrum A political spectrum is a system to characterize and classify different political positions in relation to one another. These positions sit upon one or more geometric axes that represent independent political dimensions. The expressions polit ...

, sometimes called an axis

Science

*Axis of rotation: see

Axis (anatomy) In anatomy, the axis (from Latin ''axis'', "axle") or epistropheus is the second cervical vertebra (C2) of the spine, immediately inferior to the atlas, upon which the head rests. The axis' defining feature is its strong odontoid process (bo ...

, the second cervical vertebra of the spine *