|1.||maths pseudoscalar pseudovector scalar Compare tensor Also called: polar vector a variable quantity, such as force, that has magnitude and direction and can be resolved into components that are odd functions of the coordinates. It is represented in print by a bold italic symbol: F or ̄F|
|2.||maths an element of a vector space|
|3.||pathol Also called: carrier an organism, esp an insect, that carries a disease-producing microorganism from one host to another, either within or on the surface of its body|
|4.||genetics Also called: cloning vector an agent, such as a bacteriophage or a plasmid, by means of which a fragment of foreign DNA is inserted into a host cell to produce a gene clone in genetic engineering|
|5.||the course or compass direction of an aircraft|
|6.||any behavioural influence, force, or drive|
|7.||to direct or guide (a pilot, aircraft, etc) by directions transmitted by radio|
|8.||to alter the direction of (the thrust of a jet engine) as a means of steering an aircraft|
|[C18: from Latin: carrier, from vehere to convey]|
vector vec·tor (věk'tər)
An organism, such as a mosquito or tick, that carries disease-causing microorganisms from one host to another.
A bacteriophage, a plasmid, or another agent that transfers genetic material from one location to another.
A quantity, such as velocity, completely specified by a magnitude and a direction.
|vector (věk'tər) Pronunciation Key
In physics and mathematics, any quantity with both a magnitude and a direction. For example, velocity is a vector because it describes both how fast something is moving and in what direction it is moving. Because velocity is a vector, other quantities in which velocity is a factor, such as acceleration and momentum, are vectors also.