different between flux vs fluid

English

Etymology

From Old French flux, from Latin fluxus (“flow”).

Pronunciation

• IPA^(key): /fl?ks/
• Rhymes: -?ks

Noun

flux (countable and uncountable, plural fluxes)

1. The act of flowing; a continuous moving on or passing by, as of a flowing stream.
   • 1730, John Arbuthnot, An Essay Concerning the Nature of Aliments

     By […] the perpetual Flux of the Liquids, a great part of the Liquids is thrown out of the Body.

   • 1991, Mann, H., Fyfe, W., Tazaki, K., & Kerrich, R., Biological Accumulation of Different Chemical Elements by Microorganisms from Yellowstone National Park, USA. Mechanisms And Phylogeny Of Mineralization In Biological Systems, 357-362.

     Investigation of the silica budget for the Upper and Lower Geyser Basins of Yellowstone National Park by Truesdell et al. suggest that the present fluxes of hotspring water and thermal energy may have been continuous for at least the past 10,000 yr.

2. A state of ongoing change.

   The schedule is in flux at the moment.

   Languages, like our bodies, are in a continual flux.

   • 1856, Richard Chenevix Trench, On the Death of an Infant

     Her image has escaped the flux of things, / And that same infant beauty that she wore / Is fixed upon her now forevermore.
3. A chemical agent for cleaning metal prior to soldering or welding.

   It is important to use flux when soldering or oxides on the metal will prevent a good bond.

4. (physics) The rate of transfer of energy (or another physical quantity) through a given surface, specifically electric flux, magnetic flux.

   That high a neutron flux would be lethal in seconds.

5. (archaic) A disease which causes diarrhea, especially dysentery.
6. (archaic) Diarrhea or other fluid discharge from the body.
7. The state of being liquid through heat; fusion.

Antonyms

• (state of ongoing change): stasis

Derived terms

Translations

Verb

flux (third-person singular simple present fluxes, present participle fluxing, simple past and past participle fluxed)

1. (transitive) To use flux on.

   You have to flux the joint before soldering.

2. (transitive) To melt.
3. (intransitive) To flow as a liquid.

Related terms

• fluxion

Adjective

flux (not comparable)

1. (uncommon) Flowing; unstable; inconstant; variable.
   • a. 1677, Isaac Barrow, "On Contentment", Sermon XL, in The Theological Works, Volume 2, Clarendon Press, 1818, page 375:

     The flux nature of all things here.

Related terms

• fluxional

Related terms

• fluctuant

Catalan

Etymology

From Latin fluxus. Doublet of fluix.

Pronunciation

• (Balearic, Central, Valencian) IPA^(key): /?fluks/

Noun

flux m (plural fluxos)

1. flow

Related terms

• fluir

Further reading

• “flux” in Diccionari de la llengua catalana, segona edició, Institut d’Estudis Catalans.

French

Etymology

Borrowed from Latin fluxus.

Pronunciation

• IPA^(key): /fly/

Noun

flux m (plural flux)

1. flow
2. flood, flood tide

   Antonym: reflux

3. (figuratively) flood (an abundance of something)

Derived terms

Further reading

• “flux” in Trésor de la langue française informatisé (The Digitized Treasury of the French Language).

Old French

Noun

flux m (oblique plural flux, nominative singular flux, nominative plural flux)

1. diarrhea (rapid passage of fecal matter through the bowels)

Romanian

Etymology

Borrowed from French flux.

Noun

flux n (plural fluxuri)

1. flow (the flow of the tide)

Declension

Spanish

Etymology

Borrowed from French flux. Doublet of flujo and flojo.

Pronunciation

• IPA^(key): /?flu?s/, [?flu??s]

Noun

flux m (plural fluxes)

1. (card playing) flush (hand consisting of all cards with the same suit)
2. (Venezuela, colloquial, Dominican Republic, dated) suit (set of clothes)

   Synonyms: terno, traje

Further reading

• “flux” in Diccionario de la lengua española, Vigésima tercera edición, Real Academia Española, 2014.

English

Etymology

From Middle English fluid, from Latin fluidus (“flowing; fluid”), from Latin flu? (“to flow”), from Proto-Indo-European *b?leh?- (“to swell; surge; overflow; run”). Akin to Ancient Greek ?????? (phlúein, “to swell; overflow”). Not related to English flow, which is a native, inherited word from *plew-.

Pronunciation

• IPA^(key): /?flu??d/
• (obsolete) IPA^(key): /?flju??d/
• Rhymes: -u??d

Noun

fluid (countable and uncountable, plural fluids)

1. 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.
2. A liquid (as opposed to a solid or gas).
   • 1992, Christopher G. Morris, Academic Press, Christopher W. Morris, Academic Press Dictionary of Science and Technology, Gulf Professional Publishing (?ISBN), page 854:

     fluid inclusion Petrology, a tiny fluid- or gas-filled cavity in an igneous rock. 1-100 micrometers in diameter, formed by the entrapment of a fluid, typically that from which the rock crystallized.

   • 2006, Jörg Fitter, Thomas Gutberlet, Neutron Scattering in Biology: Techniques and Applications, Springer Science & Business Media (?ISBN), page 236:

     For studying interfaces between solid and another solid, fluid, or gas, a sample can be oriented with its reflecting surface(s) vertical (and with the scattering plane, as defined by nominal incident and reflected wavevectors, horizontal).

   • 2011, Andrew T Raftery, Michael S. Delbridge, Marcus J. D. Wagstaff, Churchill's Pocketbook of Surgery, International Edition E-Book, Elsevier Health Sciences (?ISBN), page 11:

     Tenderness: is the lump tender?

     Composition: is the mass solid, fluid or gas?

   • 2012, Will Pettijohn P.E.C., Oil & Gas Handbook: A Roughneck's guide to the Universe, AuthorHouse (?ISBN), page 23:

     The choke manifold then expels the fluid or gas to the gas buster or a panic line. The panic line will then either send the fluid or gas to the reserve pit or a flare stack or flare tank.

   • For more quotations using this term, see Citations:fluid.
3. (specifically, medicine, colloquial, typically in the plural) Intravenous fluids.

Derived terms

• amber fluid
• brake fluid
• fluid mechanics
• superfluid

Translations

Adjective

fluid (comparative more fluid, superlative most fluid)

1. (not comparable) Of or relating to fluid.
2. In a state of flux; subject to change.
3. Moving smoothly, or giving the impression of a liquid in motion.
4. (of an asset) Convertible into cash.
5. (rare) Genderfluid.
   • 2017, Rick Riordan, Magnus Chase and the Hammer of Thor (?ISBN), page 274 (the genderfluid character Alex Fierro is speaking):

     “Oh, Loki made sure of that. My mortal parents blamed him for the way I was, for being fluid.”

Synonyms

• (of or relating to fluid): fluidical, liquid; see also Thesaurus:fluidic
• (subject to change): unstable, variable; see also Thesaurus:changeable
• (moving smoothly): fluent, fluxive; see also Thesaurus:flowing or Thesaurus:runny

Translations

Related terms

• fluctuate
• fluctuation
• fluency
• fluent
• flux
• fluidal
• fluidic
• fluidics
• fluidify
• fluidise
• fluidize
• fluidity
• fluidous
• semifluid

References

Further reading

• fluid in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.
• fluid in The Century Dictionary, New York, N.Y.: The Century Co., 1911.
• fluid at OneLook Dictionary Search

Catalan

Adjective

fluid (feminine fluida, masculine plural fluids, feminine plural fluides)

1. fluid

Derived terms

• fluïdesa

Noun

fluid m (plural fluids)

1. fluid

Further reading

• “fluid” in Diccionari de la llengua catalana, segona edició, Institut d’Estudis Catalans.
• “fluid” in Gran Diccionari de la Llengua Catalana, Grup Enciclopèdia Catalana.
• “fluid” in Diccionari normatiu valencià, Acadèmia Valenciana de la Llengua.
• “fluid” in Diccionari català-valencià-balear, Antoni Maria Alcover and Francesc de Borja Moll, 1962.

German

Adjective

fluid (not comparable)

1. fluid

Declension

Synonyms

• flüssig

Further reading

• “fluid” in Duden online

Norwegian Bokmål

Noun

fluid n (definite singular fluidet, indefinite plural fluid or fluider, definite plural fluida or fluidene)

1. a fluid

Synonyms

• væske

Derived terms

• fluidmekanikk

References

• “fluid” in The Bokmål Dictionary.

Norwegian Nynorsk

Noun

fluid n (definite singular fluidet, indefinite plural fluid, definite plural fluida)

1. a fluid

Synonyms

• væske

Derived terms

• fluidmekanikk

References

• “fluid” in The Nynorsk Dictionary.

Romanian

Etymology

From French fluide, from Latin fluidus.

Adjective

fluid m or n (feminine singular fluid?, masculine plural fluizi, feminine and neuter plural fluide)

1. fluid

Declension

Related terms

• fluiditate

Serbo-Croatian

Pronunciation

• IPA^(key): /flûi?d/
• Hyphenation: flu?id

Noun

fl??d m (Cyrillic spelling ??????)

1. fluid

Declension

Spanish

Verb

fluid

1. (Spain) Informal second-person plural (vosotros or vosotras) affirmative imperative form of fluir.