Meaning of QUATERNION in English

QUATERNION

noun see: four Date: 14th century a set of four parts, things, or persons, 2. a generalized complex number that is composed of a real number and a vector and that depends on one real and three imaginary units, the calculus of ~s

Merriam Webster. Explanatory English dictionary Merriam Webster.      Толковый словарь английского языка Мерриам-Уэбстер.