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## Quaternion

quaternion
n. foursome of real numbers that contains the complex numbers (Mathematics); group of four people or things

Quaternion
In mathematics, the quaternions are a number system that extends the complex numbers. They were first described by Irish mathematician William Rowan Hamilton in 1843 and applied to mechanics in three-dimensional space. A feature of quaternions is that multiplication of two quaternions is noncommutative. Hamilton defined a quaternion as the quotient of two directed lines in a three-dimensional space or equivalently as the quotient of two vectors.

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quaternion

Noun
1. the cardinal number that is the sum of three and one
(synonym) four, 4, IV, tetrad, quatern, quaternary, quaternity, quartet, quadruplet, foursome, Little Joe
(hypernym) digit, figure

quaternion
nm. quaternion, foursome of real numbers that contains the complex numbers (Mathematics); group of four people or things

Quaternion
(v. t.)
To divide into quaternions, files, or companies.

(n.)
The quotient of two vectors, or of two directed right lines in space, considered as depending on four geometrical elements, and as expressible by an algebraic symbol of quadrinomial form.

(n.)
The number four.

(n.)
A word of four syllables; a quadrisyllable.

(n.)
A set of four parts, things, or person; four things taken collectively; a group of four words, phrases, circumstances, facts, or the like.

Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter. About

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