流りゅう動どう物ぶつ

りゅ

う

ど

う

ぶ

つ

Meanings

1

noun

fluid; liquid substance

Technical or formal term for a substance that flows, including liquids and gases. Often used in scientific or industrial contexts.

この装そう置ちは流りゅう動どう物ぶつの粘ねん度どを測そく定ていします。
This device measures the viscosity of fluids.

current, a sink, flow

動move, motion, change

物thing, object, matter

Similar words

流りゅう体たい
More common general term for fluid in physics and engineering. 流動物 is less frequent and may emphasize the material or substance aspect.
液えき体たい
Specifically liquid, not gas. 流動物 can include both liquids and gases.

Etymology

Compound of 流動 (flow, movement) + 物 (thing, substance). The exact historical derivation is uncertain, but the term is a straightforward technical coinage.