axis of rotation
The 'axis of rotation' is a fundamental concept used to describe the line around which an object or body rotates, applicable in various fields such as physics, mathematics, aviation, and anatomy.
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Definition
B2General
(technical)An imaginary line around which an object rotates.
Example
- The Earth spins around its axis of rotation, causing day and night.
C1Mathematics
(technical, academic)A line in space about which a rigid body or geometric object rotates.
Example
- In a Cartesian coordinate system, the axis of rotation can be represented by a unit vector.
C1Aviation
(technical)An imaginary line critical for understanding aircraft movements, including roll, pitch, and yaw.
Example
- The pilot adjusted the aircraft's roll around the longitudinal axis of rotation.
C1Anatomy
(technical)An imaginary line that projects through the pivot or rotation point in a joint.
Example
- The elbow joint flexes and extends around a medial-lateral axis of rotation.
Similar
Terms that have similar or relatively close meanings to "axis of rotation":
polar axisrotation timepivot pointaxial pointmajor axisaxis of upheavalmoment of inertiaoptic axiscentre of inertiarotational period