Subnormal

Subnormal may refer to:
 * Subnormal body temperature, a common term for hypothermia
 * Subnormal operator, a type of operator in operator theory in mathematics
 * Subnormal number, another name for a denormal number in floating point arithmetic
 * Subnormal profit, which is negative profit (economics)
 * Subnormal series, a type of subgroup series in group theory in mathematics
 * Subnormal subgroup, a type of subgroup in group theory in mathematics
 * The projection of a normal of a curve onto the x-axis; see subtangent