fluidyoudaoicibaDictYouDict[fluid 词源字典]
fluid: see flux
[fluid etymology, fluid origin, 英语词源]
fluid (adj.)youdaoicibaDictYouDict
early 15c., "liquid, capable of flowing," from Middle French fluide (14c.) and directly from Latin fluidus "fluid, flowing, moist," from fluere "to flow" (see fluent). Figurative use, of non-material things, "not fixed or rigid," from 1640s. Related: Fluidly.
fluid (n.)youdaoicibaDictYouDict
"substance capable of flowing," 1660s, from fluid (adj.). Related: Fluidal (1869), fluidic (1821, Marmaduke Tulket).