vector Meaning, Definition & Usage
noun a variable quantity that can be resolved into components
noun a straight line segment whose length is magnitude and whose orientation in space is direction
noun any agent (person or animal or microorganism) that carries and transmits a disease
- mosquitos are vectors of malaria and yellow fever
- fleas are vectors of the plague
- aphids are transmitters of plant diseases
- when medical scientists talk about vectors they are usually talking about insects
noun (genetics) a virus or other agent that is used to deliver DNA to a cell
EtymologyL., a bearer, carrier. fr.
Same as Radius vector.
(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. ✍ 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).