Standard Lemma guide

flux

adj · noun · verb · 22 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • /flʌks/
  • US: Recorded audio is listed in the source snapshot.
  • rhymes with -ʌks
  • CMU ARPABET: F L AH1 K S Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

adj

Meaning 1

Flowing; unstable; inconstant; variable.

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable, uncommon

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

The act of flowing; a continuous moving on or passing by, as of a flowing stream.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Examples

  • 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.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

A state of ongoing change.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Examples

  • The schedule is in flux at the moment.
  • Languages, like our bodies, are in a continual flux.

Meaning relationships

Synonyms: none provided

Antonyms: stasis

4

noun

Meaning 4

A chemical agent for cleaning metal prior to soldering or welding.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Examples

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

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

noun

Meaning 5

The rate of transfer of energy (or another physical quantity), especially an electric or magnetic field, through a given surface.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Topics: natural-sciences, physical-sciences, physics

Examples

  • That high a neutron flux would be lethal in seconds.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

6

noun

Meaning 6

A disease which causes diarrhea, especially dysentery.

Definition source: English Wiktionary via Wiktextract

Usage: archaic, countable, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

7

noun

Meaning 7

Diarrhea or other fluid discharge from the body.

Definition source: English Wiktionary via Wiktextract

Usage: archaic, countable, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

8

noun

Meaning 8

The state of being liquid through heat; fusion.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

9

verb

Meaning 9

To use flux on.

Definition source: English Wiktionary via Wiktextract

Usage: transitive

Examples

  • You have to flux the joint before soldering.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

10

verb

Meaning 10

To melt.

Definition source: English Wiktionary via Wiktextract

Usage: transitive

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

11

verb

Meaning 11

To flow as a liquid.

Definition source: English Wiktionary via Wiktextract

Usage: intransitive

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

12

noun

Meaning 12

in constant change

Definition source: Princeton WordNet 3.0

Examples

  • his opinions are in flux
  • the newness and flux of the computer industry

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: change

13

noun

Meaning 13

(physics) the number of changes in energy flow across a given surface per unit area

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: flux density

Antonyms: none provided

Broader terms: density, denseness

14

noun

Meaning 14

a flow or discharge

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: fluxion

Antonyms: none provided

Broader terms: flow, flowing

15

noun

Meaning 15

the lines of force surrounding a permanent magnet or a moving charged particle

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: magnetic field, magnetic flux

Antonyms: none provided

Broader terms: field, field of force, force field

Narrower terms: magnetosphere, solar magnetic field

16

noun

Meaning 16

a state of uncertainty about what should be done (usually following some important event) preceding the establishment of a new direction of action

Definition source: Princeton WordNet 3.0

Examples

  • the flux following the death of the emperor

Meaning relationships

Synonyms: state of flux

Antonyms: none provided

Broader terms: state

17

noun

Meaning 17

excessive discharge of liquid from a cavity or organ (as in watery diarrhea)

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: pathology

18

noun

Meaning 18

a substance added to molten metals to bond with impurities that can then be readily removed

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: chemical, chemical substance

Narrower terms: soldering flux

19

noun

Meaning 19

the rate of flow of energy or particles across a given surface

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: rate

Narrower terms: neutron flux, radiant flux

20

verb

Meaning 20

mix together different elements

Definition source: Princeton WordNet 3.0

Examples

  • The colors blend well

Meaning relationships

Synonyms: blend, mix, conflate, commingle, immix, fuse, coalesce, meld, combine, merge

Antonyms: none provided

Broader terms: change integrity

Narrower terms: gauge, absorb, melt, meld, blend in, mix in, accrete, conjugate, admix, alloy, syncretize, syncretise

21

verb

Meaning 21

become liquid or fluid when heated

Definition source: Princeton WordNet 3.0

Examples

  • the frozen fat liquefied

Meaning relationships

Synonyms: liquefy, liquify

Antonyms: none provided

Broader terms: change integrity

Narrower terms: condense, distill, distil, dissolve, thaw, unfreeze, unthaw, dethaw, melt, fuse

22

verb

Meaning 22

move or progress freely as if in a stream

Definition source: Princeton WordNet 3.0

Examples

  • The crowd flowed out of the stadium

Meaning relationships

Synonyms: flow

Antonyms: none provided

Broader terms: move

Narrower terms: ripple, ruffle, riffle, cockle, undulate, transpire, transpirate

History

Etymology

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

Across languages

Translations

62 source translations are retained for this English entry.

  • Bulgarian: променливост (promenlivost) — state of ongoing change
  • Bulgarian: течение (tečenie) — state of ongoing change
  • Danish: forandring — state of ongoing change
  • Dutch: voortdurende wijziging — state of ongoing change
  • Finnish: muutos — state of ongoing change
  • Finnish: muutostila — state of ongoing change
  • German: Fluss — state of ongoing change
  • Greek: ρευστότητα (refstótita) — state of ongoing change
  • Italian: flusso — state of ongoing change
  • Japanese: 多様性 (tayōsei) — state of ongoing change
  • Portuguese: fluxo — state of ongoing change
  • Russian: изме́нчивость (izménčivostʹ) — state of ongoing change
  • Russian: постоянное движе́ние (postojannoje dvižénije) — state of ongoing change
  • Russian: разнообра́зие (raznoobrázije) — state of ongoing change
  • Russian: тече́ние (tečénije) — state of ongoing change
  • Serbo-Croatian: fluks — state of ongoing change
  • Spanish: fluxión — state of ongoing change
  • Ukrainian: різноманітність (riznomanitnistʹ) — state of ongoing change
  • Bulgarian: флюс (fljus) — chemical agent for cleaning metal prior to soldering or welding
  • Danish: flusmiddel — chemical agent for cleaning metal prior to soldering or welding
  • Dutch: flux — chemical agent for cleaning metal prior to soldering or welding
  • Dutch: vloeimiddel — chemical agent for cleaning metal prior to soldering or welding
  • Finnish: juoksute — chemical agent for cleaning metal prior to soldering or welding
  • Finnish: juotosapuaine — chemical agent for cleaning metal prior to soldering or welding
  • Finnish: fluksi — chemical agent for cleaning metal prior to soldering or welding
  • French: décapant — chemical agent for cleaning metal prior to soldering or welding
  • German: Flussmittel — chemical agent for cleaning metal prior to soldering or welding
  • Greek: τήξη (tíxi) — chemical agent for cleaning metal prior to soldering or welding
  • Hungarian: salakképző anyagok — chemical agent for cleaning metal prior to soldering or welding
  • Italian: flussante — chemical agent for cleaning metal prior to soldering or welding
  • Japanese: 融剤 (yūzai) — chemical agent for cleaning metal prior to soldering or welding
  • Khmer: ក្រមួន (krɑɑmuən) — chemical agent for cleaning metal prior to soldering or welding
  • Norwegian: Fluks — chemical agent for cleaning metal prior to soldering or welding
  • Polish: topnik — chemical agent for cleaning metal prior to soldering or welding
  • Portuguese: fundente — chemical agent for cleaning metal prior to soldering or welding
  • Russian: флюс (fljus) — chemical agent for cleaning metal prior to soldering or welding
  • Serbo-Croatian: fluks — chemical agent for cleaning metal prior to soldering or welding
  • Spanish: fundente — chemical agent for cleaning metal prior to soldering or welding
  • Swedish: flussmedel — chemical agent for cleaning metal prior to soldering or welding
  • Welsh: fflycs — chemical agent for cleaning metal prior to soldering or welding
  • Asturian: fluxu — rate of transfer of energy (electric flux, magnetic flux)
  • Bulgarian: поток (potok) — rate of transfer of energy (electric flux, magnetic flux)
  • Catalan: flux — rate of transfer of energy (electric flux, magnetic flux)
  • Czech: tok — rate of transfer of energy (electric flux, magnetic flux)
  • Danish: flux — rate of transfer of energy (electric flux, magnetic flux)
  • Finnish: vuo — rate of transfer of energy (electric flux, magnetic flux)
  • French: flux — rate of transfer of energy (electric flux, magnetic flux)
  • Galician: fluxo — rate of transfer of energy (electric flux, magnetic flux)
  • German: Fluss — rate of transfer of energy (electric flux, magnetic flux)
  • Greek: ροή (roḯ) — rate of transfer of energy (electric flux, magnetic flux)
  • Italian: flusso — rate of transfer of energy (electric flux, magnetic flux)
  • Japanese: 流量 (ryūryou) — rate of transfer of energy (electric flux, magnetic flux)
  • Norwegian: Fluks — rate of transfer of energy (electric flux, magnetic flux)
  • Polish: strumień — rate of transfer of energy (electric flux, magnetic flux)
  • Portuguese: fluxo — rate of transfer of energy (electric flux, magnetic flux)
  • Russian: пото́к (potók) — rate of transfer of energy (electric flux, magnetic flux)
  • Serbo-Croatian: fluks — rate of transfer of energy (electric flux, magnetic flux)
  • Spanish: flujo — rate of transfer of energy (electric flux, magnetic flux)
  • Turkish: akı — rate of transfer of energy (electric flux, magnetic flux)
  • Turkish: seyelan — rate of transfer of energy (electric flux, magnetic flux)
  • Ottoman Turkish: سیلان (seyelân) — rate of transfer of energy (electric flux, magnetic flux)
  • Vietnamese: thông lượng — rate of transfer of energy (electric flux, magnetic flux)