👉 The term "quaternarian" is a technical term used in physics and astronomy to describe a system that consists of four elements, each with its own unique property or characteristic. Specifically, it refers to an object whose state can be described by a set of four numbers, which are known as quaternions, which are a complex number representation that allows for the manipulation of rotations and scalings in three-dimensional space. Quaternions were introduced by physicist Arthur Cayley in 1852