Nominal generally derives from Name but it has specific meanings in the following areas:

• In Economics a nominal value indicates the listed value of an item in a monetary currency as opposed to the 'real' value in terms of purchasing power. See Real vs. nominal in economics.
• In Grammar nominal phrase is a synonym for noun phrase. This is sometimes contracted to nominal.
• In Arteology a nominal definition describes the meaning of a concept by using other concepts that have already been defined adequately. This is sometimes contracted to nominal.
• In Statistics nominal data is a form of categorical data where the order of the categories is not significant. This is sometimes contracted to nominals.