Rotation-axis
noun, Crystallography.
1.
an imaginary line through a crystal about which the crystal may be rotated a specified number of degrees and be brought back to its original position.
Read Also:
- Rotation flap
rotation flap n. A pedicle flap rotated from the donor site to an adjacent recipient area, usually as a direct flap.
- Rotation-inversion axis
[roh-tey-shuh n in-vur-zhuh n, -shuh n] /roʊˈteɪ ʃən ɪnˈvɜr ʒən, -ʃən/ noun, Crystallography. 1. an axis of a crystal such that rotating about the axis and then inverting the crystal brings the crystal back to its original position.
- Rotation-of-axes
[ak-seez] /ˈæk siz/ noun, Mathematics. 1. a process of replacing the axes in a Cartesian coordinate system with a new set of axes making a specified angle with and having the same origin as the original axes.
- Rotations per minute
revolutions per minute
- Rotation vector
rotation vector A vector quantity whose magnitude is proportional to the amount or speed of a rotation, and whose direction is perpendicular to the plane of that rotation (following the right-hand rule). Spin vectors, for example, are rotation vectors.