fluid definition

1. a substance that is fluid at room temperature and pressure
2. continuous amorphous matter that tends to flow and to conform to the outline of its container: a liquid or a gas
3. subject to change; variable
• examples: a fluid situation fraught with uncertainty
• examples: everything was unstable following the coup
4. characteristic of a fluid; capable of flowing and easily changing shape
5. in cash or easily convertible to cash
• examples: liquid (or fluid) assets
6. affording change (especially in social status)
• examples: Britain is not a truly fluid society
• examples: upwardly mobile