# Susceptibility

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**Susceptibility** may refer to:

## Physics and engineering

In physics the **susceptibility** is a quantification for the change of an [extensive property](/source/Intensive_and_extensive_properties#Extensive_properties) under variation of an [intensive property](/source/Intensive_and_extensive_properties#Intensive_properties). The word may refer to:

- In [physics](/source/Physics), the susceptibility of a material or substance describes its response to an applied field. For example: - [Magnetic susceptibility](/source/Magnetic_susceptibility) - [Electric susceptibility](/source/Electric_susceptibility)
- The two types of susceptibility above are examples of a [linear response function](/source/Linear_response_function); sometimes the terms *susceptibility* and *linear response function* are used interchangeably.
- In [electromagnetic compatibility](/source/Electromagnetic_compatibility) (EMC), susceptibility is the sensitivity of a device's function to incoming electromagnetic interference

## Health and medicine

- In epidemiology, a [susceptible individual](/source/Susceptible_individual) is a member of a population who is at risk of becoming infected by a disease
- In microbiology, pharmacology, and medicine drug susceptibility is the ability of a microorganism to be inhibited or killed by the drug, as in [antibiotic susceptibility](/source/Antibiotic_sensitivity), the susceptibility of microorganisms to antibiotics (often used synonymously with the lay term sensitivity)

## Botany and environmental science

- Susceptibility to pathogens is the extent to which a plant, vegetation complex, or ecological community would suffer from a pathogen if exposed, without regard to the likelihood of exposure – the opposite of [Plant disease resistance](/source/Plant_disease_resistance) - It should not be confused with vulnerability, which by convention in this field takes into account both the effect of exposure *and* the likelihood of exposure

## Military science

- The vulnerability of a target audience to particular forms of [psychological warfare](/source/Psychological_warfare)

## See also

- [Vulnerability](/source/Vulnerability)

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Adapted from the Wikipedia article [Susceptibility](https://en.wikipedia.org/wiki/Susceptibility) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Susceptibility?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.