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vector US English

A quantity having direction as well as magnitude, especially as determining the position of one point in space relative to another

free vector US English

A vector of which only the magnitude and direction are specified, not the position or line of action

mass vector US English

A vector describing the position of a particle of matter, whose magnitude is the product of the mass of the particle and its distance from the origin.

row vector US English

A vector represented by a matrix consisting of a single row of elements

unit vector US English

A vector that has a magnitude of one

polar vector US English

A vector which changes sign when the signs of all its components are changed.

radius vector US English

A line of variable length drawn from a fixed origin to a curve

state vector US English

A vector in a space whose dimensions correspond to all the independent wave functions of a system, the instantaneous value of the vector conveying all possible information about the state of the system at that instant

vector field US English

A function of a space whose value at each point is a vector quantity

vector space US English

A space consisting of vectors, together with the associative and commutative operation of addition of vectors, and the associative and distributive operation of multiplication of vectors by scalars

cloning vector US English

A DNA molecule (especially a plasmid) capable of replicating, which is modified such that a fragment of foreign DNA can be inserted into it and which can hence be used for cloning.

position vector US English

A vector which defines the position of a point relative to a fixed origin.

Poynting vector US English

The vector product of the electric and magnetic field strengths at any point, which can often be interpreted as describing the magnitude and direction of the flow of electromagnetic energy.

vector product US English

The product of two real vectors in three dimensions that is itself a vector at right angles to both the original vectors. Its magnitude is the product of the magnitudes of the original vectors and the sine of the angle between their directions

vector processor US English

A processor that is able to process sequences of data with a single instruction