yawiki.org entry for Volatile

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Volatile is a word synonymous with "temporary" or "fickle". It has specific meanings in several fields:

In economics:

Volatility is a measure of the risk in a financial instrument

In chemistry, a volatile substance evaporates at a relatively low temperature:

Volatile liquids are liquids with a high vapor pressure or low boiling point

Volatile organic compounds evaporate at normal temperatures and pressures

Volatile anaesthetics are a class of anaesthetics which evaporate easily

Volatile substance abuse is the abuse of household inhalants containing volatile compounds

Volatile oil is another name for "essential oil"

Volatile acidity is a term used in winemaking to indicate an unacceptably high level of acid or vinegar

In computer science:

Volatile variables are those that can be changed by external processes

Volatile memory holds items in memory only while power is on

In geology:

Volatiles are the volatile compounds of magma (mostly water vapor) that play an important part in the appearance and strength of volcanoes

Volatile

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