scalar
scalar, quantity or number possessing only sign and magnitude, e.g., the real numbers (see number), in contrast to vectors and tensors; scalars obey the rules of elementary algebra. Many physical quantities have scalar values, e.g., length, area, mass, energy, and electric charge. Such quantities as velocity, force, momentum, and spin are vectors and follow different algebraic rules.
The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved. More on scalar from Fact Monster:
 vector: Vector Analysis and Vector Space  Vector Analysis and Vector Space The components of a vector need not be constants but can also be ...
 speed  speed speed, change in distance with respect to time. Speed is a scalar rather than a vector ...
 motion  motion motion, the change of position of one body with respect to another. The rate of change is ...
 vector: Addition and Multiplication of Vectors  Addition and Multiplication of Vectors The addition, or composition, of two vectors can be ...
 work  work work, in physics and mechanics, transfer of energy by a force acting to displace a body. Work ...
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