I. |səb+ noun
Etymology: in sense 1, from New Latin subnormalis, from Latin sub- + normalis normal; in sense 2, from subnormal (II) — more at normal
1. : the projection of the normal of a curve on the x-axis
2. : one who is below the range of normality ; especially : a person of subnormal intelligence
II. adjective
Etymology: International Scientific Vocabulary sub- + normal
1. : lower or smaller than normal
a subnormal temperature
repeated subnormal harvests
2. : having less of something and especially of intelligence than is normal
subnormal children
• sub·normality “+ noun
• sub·normally “+ adverb