the property of flowing easily - adding lead makes the alloy easier to cast because the melting point is reduced and the fluidity is increased - they believe that fluidity increases as the water gets warmer • Syn: fluidity, fluidness, liquidity, liquidness • Derivationally related forms: runny, liquid (for: liquidity), fluid (for: fluidness), fluid (for: fluidity) • Hypernyms: thinness