Vector - Definition
vector
n 1: a variable quantity that can be resolved into components
2: a straight line segment whose length is magnitude and whose
orientation in space is direction
3: 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"
[syn: vector, transmitter]
4: (genetics) a virus or other agent that is used to deliver DNA
to a cell