quaternion meaning

Definition of quaternion

1. the cardinal number that is the sum of three and one

   Synonyms: four, 4, IV, tetrad, quatern, quaternary, quaternity, quartet, quadruplet, foursome, Little Joe

   Type of: digit

quaternion in a sentence

• In quaternion arithmetic, there are more than two distinct square roots of -1.
• Many students find quaternion arithmetic unintuitive because it has non-commutative multiplication.