Meaning of quaternion
Pronunciation: (kwu-tûr'nē-un), [key]
- a group or set of four persons or things.
- four gathered sheets folded in two for binding together.
- an expression of the form a + bi + cj + dk, where a, b, c, and d are real numbers; i2 = j2 = k2 = −1; and ij = −ji = k,&hasp; jk = −kj = i, and ki = −ik = j.
- a quantity or operator expressed as the sum of a real number and three complex numbers, equivalent to the quotient of two vectors. The field of quaternions is not commutative under multiplication.
- quaternion (Thesaurus)