|1.||a substance, such as a liquid or gas, that can flow, has no fixed shape, and offers little resistance to an external stress|
|2.||capable of flowing and easily changing shape|
|3.||of, concerned with, or using a fluid or fluids|
|4.||constantly changing or apt to change|
|5.||smooth in shape or movement; flowing|
|[C15: from Latin fluidus, from fluere to flow]|
fluid flu·id (flōō'ĭd)
An amorphous substance whose molecules move freely past one another; a liquid or gas. adj.
Of or characteristic of a fluid.