- Obsession - Obsessive interest - Preoccupation - The act of fixing, or the state of being fixed. - The act of uniting chemically with a solid substance or
in a solid form; reduction to a non-volatile condition; -- said of
gaseous elements. - The act or process of ceasing to be fluid and becoming
firm. - A state of resistance to evaporation or volatilization by
heat; -- said of metals.