the.com/normal
A statistical average wearing the costume of a moral ideal.
means Conforming to what's common, expected, or typical for a given group or situation.
from From Latin normalis, meaning made according to a carpenter's square (norma) — so normal literally means right-angled, perfectly square.
Math senseIn geometry, normal means perpendicular, not ordinary.
Statistical curveThe bell curve is officially called normal distribution.
Late bloomerIts everyday usual meaning arrived only in the 1800s.