From Glossary of Meteorology
Typically used to describe a hydrometeor's orientation relative to some fixed frame of reference, such as the direction of propagation of a radar wave, the direction of polarization of that wave, or the true vertical. A hydrometeor's canting or orientation is fully described by a set three angles [called the Euler angles (see Wikipedia 2018)].
Wikipedia, The Free Encyclopedia, 2018: Euler angles. Accessed 9 April 2018. Wikipedia, https://en.wikipedia.org/wiki/Euler_angles.
Term edited 9 April 2018.