flux

FLUKS /flʌks/
nounverbC1GRESATTOEFL
technicalacademic

A chemical substance used in welding and soldering to clean metal surfaces and prevent oxidation; or continuous change and flow.

In fabrication, flux chemically dissolves oxides at high heat so liquid metal wets the joint cleanly. In broader contexts, flux means fluid transformation.

The story behind the word. Flux comes from Latin 'fluxus' (flow), from 'fluere.' Medieval alchemists noticed that adding certain minerals made stubborn metals melt and flow freely like water, hence naming those mineral cleaners 'flux.'

Word relationships

  • flow: Flow refers to physical movement of fluids, while flux emphasizes dynamic transition or chemical cleaning flow in welding.
  • stagnation: Stagnation means lack of change or movement, opposite to state of flux.

Commonly confused with

  • influx: Influx means an arrival of large numbers of people or things, whereas flux means flow or cleaning chemical.

Word family

  • fluxing (noun): Applying flux to metal surfaces before heating

Collocations

  • rosin flux
  • welding flux
  • in a state of flux
  • flux density

Idioms & expressions

  • in flux

Example sentences

  • "The technician brushed rosin flux onto the oxidized copper joint to allow the molten solder to flow smoothly." Soldering practice
  • "The technology sector remains in a constant state of flux as artificial intelligence reshapes traditional business models." Corporate management

Memory hook

FLUX helps molten metal FLOW by cleaning off dirty oxides. Clean oxides, let metal flow.

When not to use

Do not use as a synonym for physical liquid flow without context of dynamic movement or chemical cleaning.

Fun facts

  • The flux coating on stick welding electrodes burns during welding to create a shielding gas envelope, protecting molten steel from atmospheric oxygen.

Related words

solder, fuse, slag

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