Technical and general term for substances that flow, encompassing both liquids and gases. Common in physics and engineering contexts.
流体力学は工学の重要な分野です。
Fluid dynamics is an important field of engineering.
The fluid flows through the pipe.
水も空気も流体の一種である。
Both water and air are types of fluids.
この流体の粘度は温度によって変化する。
The viscosity of this fluid changes with temperature.
Engineers work with a variety of fluids.
液体 refers specifically to liquids, whereas 流体 is the broader physics term covering both liquids and gases.
気体 refers specifically to gases, whereas 流体 is the broader physics term covering both liquids and gases.
fluid mechanics; fluid dynamics; hydrodynamics
fluid coupling; hydraulic coupling
ferrofluid; magnetic fluid; magnetorheological fluid
viscous fluid
Newtonian fluid
Compound of 流 (ryū, 'flow') and 体 (tai, 'body'), literally 'flowing body'. The term was coined in the modern era as a translation of the Western scientific concept of 'fluid'.