English word fluid comes from Proto-Indo-European *bʰleh₁-, and later Proto-Italic *flowō (Flow.)
| Dictionary entry | Language | Definition |
|---|---|---|
| *bʰleh₁- | Proto-Indo-European (ine) | |
| *bʰley- | Proto-Indo-European (ine) | |
| *flowō | Proto-Italic (itc-pro) | Flow. |
| fluo | Latin (lat) | I am soaked in. I flow, stream, pour. |
| fluidus | Latin (lat) | Liquid, fluid, flowing. Soft, feeble, moist. |
| fluid | Middle English (enm) | |
| fluid | English (en) | Any substance which can flow with relative ease, tends to assume the shape of its container, and obeys Bernoulli's principle; a liquid, gas or plasma. (not comparable) Of or relating to fluid.. (of an asset) Convertible into cash.. (rare) Genderfluid.. In a state of flux; subject to change.. Moving smoothly, or giving the impression of a liquid in motion. |