adj. & n.
adj. 1 conforming to a standard; regular, usual, typical. 2 free from mental or emotional disorder. 3 Geom. (of a line) at right angles, perpendicular. 4 Chem. (of a solution) containing one gram-equivalent of solute per litre.
n. 1 a the normal value of a temperature etc., esp. blood-heat. b the usual state, level, etc. 2 Geom. a line at right angles. normal distribution Statistics a function that represents the distribution of many random variables as a symmetrical bell-shaped graph. normal school (in the US, France, etc.) a school or college for training teachers. normalcy n. esp. US. normality n.
[ F normal or L normalis (as NORM) ]