Definitions of fluid:

  • noun:   a continuous amorphous substance that tends to flow and to conform to the outline of its container: a liquid or a gas
  • noun:   a substance that is fluid at room temperature and pressure
  • adjective:   characteristic of a fluid; capable of flowing and easily changing shape
  • adjective:   subject to change; variable
    Example: "A fluid situation fraught with uncertainty"
  • adjective:   affording change (especially in social status)
    Example: "Britain is not a truly fluid society"
  • adjective:   in cash or easily convertible to cash
    Example: "Liquid (or fluid) assets"
  • adjective:   smooth and unconstrained in movement
    Example: "The fluid motion of a cat"