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# vector

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noun vec·tor \ˈvek-tər\

## Definition of vector

1. 1a :  a quantity that has magnitude and direction and that is commonly represented by a directed line segment whose length represents the magnitude and whose orientation in space represents the direction; broadly :  an element of a vector spaceb :  a course or compass direction especially of an airplane

2. 2a :  an organism (such as an insect) that transmits a pathogenb :  pollinator a

3. 3 :  an agent (such as a plasmid or virus) that contains or carries modified genetic material (such as recombinant DNA) and can be used to introduce exogenous genes into the genome of an organism

## Examples of vector in a Sentence

1. a mosquito that is the principal vector of yellow fever

## Origin and Etymology of vector

earlier, short for radius vector, borrowed from Latin, “carrier, conveyer,” from vec-, alternate stem of vehere “to convey, carry” + -tor, agent suffix — more at 1way

First Known Use: 1846

2

verb vec·tor

;

## vectoring

play \ˈvek-t(ə-)riŋ\
1. ###### transitive verb
2. 1 :  to guide (something or someone, such as an airplane, its pilot, or a missile) in flight by means of a radioed vector

3. 2 :  to change the direction of (the thrust of a jet engine) for steering

1941

1941

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noun

## Definition of vector for English Language Learners

• mathematics : a quantity (such as velocity) that has size and direction

• : the course or direction of an airplane

• biology : an insect, animal, etc., that carries germs that cause disease

## vector

play
noun vec·tor \ˈvek-tər\

## Definition of vector for Students

1. :  a living thing (as a mosquito, fly, or tick) that carries and passes on a disease-causing microorganism

1

## vector

play
noun vec·tor \ˈvek-tər\

## Medical Definition of vector

1. 1:  a quantity that has magnitude and direction and that is usually represented by part of a straight line with the given direction and with a length representing the magnitude

2. 2:  an organism (as an insect) that transmits a pathogen from one organism or source to another fleas are vectors of plague—compare carrier 1a

3. 3:  an agent (as a plasmid or virus) that contains or carries modified genetic material (as recombinant DNA) and can be used to introduce exogenous genes into the genome of an organism

2

## vector

transitive verb vec·tor

;

## vectoring

\-t(ə-)riŋ\play
1. :  to transmit (a pathogen or disease) from one organism to another :  act as a vector for a disease vectored by flies

## Seen and Heard

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