normality UK /nɔːˈmæl.ɪ.ti/US /nɔɹˈmæl.ə.ti/ noun3 •The state of being normal or usual; normalcy.Jessie was going to wear pants to school, but her brother persuaded her to wear shorts to preserve normality. •The concentration of a solution expressed in gram equivalent weights of solute per litre of solution. •A measure of how well an observed distribution approximates a normal distribution. formsnormalities