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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

1. Subject to change; variable
   "a fluid situation fraught with uncertainty"
   - unstable
    
2. Characteristic of a fluid; capable of flowing and easily changing shape
   - runny
    
3. Unconstrained and flowing smoothly in movement
   "the fluid motion of a cat"
   - fluent, liquid, smooth
    
4. In cash or easily convertible to cash
   "fluid assets"
   - liquid
    
5. Affording change (especially in social status)
   "Britain is not a truly fluid society"
   - mobile

Derived forms: fluids

See also: changeable, changeful, disposable, fluidness, graceful, liquid

Type of: matter, substance

Encyclopedia: Fluid