phlogiston definition

  • noun:
    • A hypothetical material formerly thought to be a volatile constituent of most combustible substances, introduced as fire in burning.
    • The hypothetical fiery principle previously assumed to-be a required constituent of combustible figures and also to be given up by them in burning.
    • The hypothetical principle of fire, or inflammability, regarded by Stahl as a chemical factor.
    • In old chemistry, the expected concept of inflammability; the situation of fire in structure with other bodies.
    • a hypothetical compound when thought to be within all combustible products and also to be released during burning

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