quaternion

Etymology
From, from , from + ,   from. .

The mathematics sense was.

Noun

 * 1) A group or set of four people or things.
 * 2) A word of four syllables.
 * 3)  A type of four-dimensional hypercomplex number consisting of a real part and three imaginary parts (real multiples of distinct, independent square roots of −1 denoted by i, j and k); commonly used in vector mathematics and as an alternative to matrix algebra in calculating the rotation of three-dimensional objects.
 * 1) A word of four syllables.
 * 2)  A type of four-dimensional hypercomplex number consisting of a real part and three imaginary parts (real multiples of distinct, independent square roots of −1 denoted by i, j and k); commonly used in vector mathematics and as an alternative to matrix algebra in calculating the rotation of three-dimensional objects.
 * 1)  A type of four-dimensional hypercomplex number consisting of a real part and three imaginary parts (real multiples of distinct, independent square roots of −1 denoted by i, j and k); commonly used in vector mathematics and as an alternative to matrix algebra in calculating the rotation of three-dimensional objects.
 * 1)  A type of four-dimensional hypercomplex number consisting of a real part and three imaginary parts (real multiples of distinct, independent square roots of −1 denoted by i, j and k); commonly used in vector mathematics and as an alternative to matrix algebra in calculating the rotation of three-dimensional objects.

Synonyms

 * , ; see also Thesaurus:quartet

Translations

 * Catalan: quaternió
 * Czech: kvaternion
 * Dutch:
 * Finnish:
 * French:
 * German: Quaternion
 * Greek:, τετράνιο
 * Hindi: चतुष्टयी
 * Icelandic: fertala
 * Italian: quaternione
 * Japanese:
 * Latin:
 * Polish: kwaternion
 * Portuguese: quaternião
 * Russian:
 * Spanish: cuaternión