Deficiency

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A deficiency is generally a lack of something. It may also refer to:

  • A deficient number, in mathematics, a number n for which σ(n) < 2n
  • Angular deficiency, in geometry, the difference between a sum of angles and the corresponding sum in a Euclidean plane
  • Deficiency (medicine), including various types of malnutrition, as well as genetic diseases caused by deficiencies of endogenously produced proteins.
  • A deficiency in construction, an item, or condition that is considered sub-standard, or below minimum expectations
  • Genetic deletion, in genetics, is also called a deficiency
  • A deficiency judgment, in the law of real estate
  • A tax deficiency, an amount owed in taxes over and above what has been submitted in payment