In the quaternion analysis, a quantity that has magnitude, but not direction; -- distinguished from a vector, which has both magnitude and direction.

A quantity that possesses a magnitude but not a direction. Mass and length are common examples.

A scalar is an element of the field of scalars for a vector space. The specification of a vector space includes specifying a field of scalars. The rules of scalar multiplication for that vector space apply to scalars from that field. Examples: R3 has real numbers for scalars C has complex numbers for scalars when viewed as a vector space over the complexes, but it can also be defined as a vector space with real scalars (a vector space "over the reals") in which case a basis would be {1,}. Synonyms: Related

a physical quantity that can be completely specified by its magnitude alone

NCL: A single element of data of any type is referred to as a scalar value.

Pertaining to data items with a rank of zero. A single data object of any intrinsic or derived data type. Contrast with array. See also rank-one object.

(1) A single datum that is not an array. (2) Not having the property of being an array.

A single-valued variable.