From Middle English quaternioun, from Late Latin quaterniō, from quaternī (ablative form of quater, “four times”) + -iōn, “-ion”.
quaternion (plural quaternions)
- A group or set of four people or things.
- A word of four syllables.
- (mathematics) A four-dimensional hypercomplex number that consists of a real dimension and 3 imaginary ones (i, j, k) that are each an independent square root of -1. They are commonly used in vector mathematics and in calculating the rotation of three-dimensional objects.
Words… ending with q, starting with q, starting with qa, starting with qo, with two letters, starting with x, starting with j, ending with j,
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