FIXATION

noun the act of fixing, or the state of being fixed.

2. fixation ·noun the act or process of ceasing to be fluid and becoming firm.

3. fixation ·noun a state of resistance to evaporation or volatilization by heat;

— said of metals.

4. fixation ·noun the act of uniting chemically with a solid substance or in a solid form; reduction to a non-volatile condition;

— said of gaseous elements.