Phlogiston

usgb/fləˈdʒɪstən/
noun

Phlogiston is a hypothetical substance once proposed as a means by which combustion occurs.

In the 18th century, scientists thought that the release of phlogiston caused materials to burn.
Visual representation of "phlogiston" - Phlogiston is a hypothetical substance once proposed as a means by which combustion occurs.

Often appears as...

  • phlogiston theory
  • release of phlogiston

Usage tips

Neutral

combustion, chemistry, oxidation

Definition 1 of 1
Visual representation of "phlogiston"
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Historical Context

Understanding the phlogiston theory helps to appreciate the evolution of scientific ideas.

Illustration for Historical Context
In the time of phlogiston, many natural phenomena were explained through it, which may seem strange today.
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Scientific Misconceptions

Phlogiston was believed to be entirely real despite no experimental evidence.

Illustration for Scientific Misconceptions
Many misconceptions in early science were based on theories like phlogiston, showing how critical experimentation is.
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Language Use

Phlogiston can be used metaphorically to refer to outdated beliefs in any field.

Illustration for Language Use
One might say "the phlogiston of the past theories" to imply a false belief.
Visual representation of the word "Phlogiston"

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