Vec"tor (?), n. [L., a bearer, carrier. fr. vehere, vectum, to carry.]
1.
Same as Radius vector.
2. (Math.) A directed quantity, as a straight
line, a force, or a velocity. Vectors are said to be equal when their directions are the same their magnitudes equal. Cf.
Scalar.
&fist; In a triangle, either side is the
vector sum of the other
two sides taken in proper order; the process finding the vector sum of two or more vectors is vector addition (see under Addition).
Hear it pronounced