double rotation

== English == === Etymology === From double +‎ rotation. === Pronunciation === IPA(key): /ˈdʌb(ə)l ɹəʊˌteɪʃən/ === Noun === double rotation (plural double rotations) (geometry) Two rotations (of an object with four or more dimensions) that happen simultaneously along two different two-dimensional planes without interfering with each other. ==== Usage notes ==== Although a rotation is generally understood as the turning around an axis, this only holds true in three dimensions. In higher dimensions, it is understood as the turning along a two-dimensional plane.