What does "fixation" mean?

Fixation: The act of uniting chemically with a solid substance or in a solid form; reduction to a non-volatile condition; -- said of gaseous elements.

Additional senses

  1. 2.The act or process of ceasing to be fluid and becoming firm. Glanvill.
  2. 3.A state of resistance to evaporation or volatilization by heat; -- said of metals. Bacon.

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