
Look up vector, vectorial, or vectors in Wiktionary, the free dictionary.
https://en.wikipedia.org/wiki/Vector...

Vectors. This is a vector: A vector has magnitude (size) and direction: The length of the line shows its magnitude and the arrowhead points in the direction.
http://mathsisfun.com/algebra/vectors.html...

Learn what vectors are and how they can be used to model realworld situations. Perform various operations with vectors like adding, subtracting, scaling, conversion ...
https://khanacademy.org/math/precalculus/vectorsprecalc...

Vectors  Motion and Forces in Two Dimensions. Lesson 1  Vectors: Fundamentals and Operations; Vectors and Direction; Vector Addition; Resultants; Vector Components;
http://physicsclassroom.com/Class/vectors...

Vector definition, a quantity possessing both magnitude and direction, represented by an arrow the direction of which indicates the direction of the quantity and the ...
http://dictionary.com/browse/vector...

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Basic Vector Operations Both a magnitude and a direction must be specified for a vector quantity, in contrast to a scalar quantity which can be quantified with just a ...
http://hyperphysics.phyastr.gsu.edu/hbase/vect.html...

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Vectors are usually denoted in lowercase boldface, as a or lowercase italic boldface, as a. (Uppercase letters are typically used to represent matrices.)
https://en.wikipedia.org/wiki/Euclidean_vector...