NORMAL
—adjective. 1 conforming to a standard; regular, usual, typical. 2 free from mental or emotional disorder. 3 geom. (of a line) at right angles, perpendicular. —none. 1 a normal value of a temperature etc. B usual state, level, etc. 2 line at right angles. ? normalcy none. Esp. Us. Normality none. [latin normalis: related to *norm]