The scientific study of forces acting on fluids (gases and liquids) at rest or in motion; covers fields such as hydrodynamics and aerodynamics.

A substance with properties between those of a solid and a liquid; also called [[半流质|半流質|ban4 liu2 zhi4]]

The branch of science concerned with the mechanics of fluids in motion, including hydrokinetics and hydrodynamics

a test of a nuclear weapon using fluid dynamics and limited fission; often referred to by the abbreviation HNE