Deficiency
Encyclopedia
A deficiency is generally a lack of something. It may also refer to:
  • A deficient number
    Deficient number
    In number theory, a deficient number or defective number is a number n for which the sum of divisors σIn number theory, a deficient number or defective number is a number n for which the sum of divisors σIn number theory, a deficient number or defective number is a number n for which...

    , 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)
    Deficiency (medicine)
    In medicine, a deficiency is a lack or shortage of a functional entity, by less than normal or necessary supply or function.-Nutrients:Malnutrition can cause various effects by deficiency of one or more nutrients...

    , including various types of malnutrition, as well as genetic diseases caused by deficiencies of endogenously produced proteins.
  • A deficiency in construction
    Construction
    In the fields of architecture and civil engineering, construction is a process that consists of the building or assembling of infrastructure. Far from being a single activity, large scale construction is a feat of human multitasking...

    , an item, or condition that is considered sub-standard, or below minimum expectations
  • Genetic deletion
    Genetic deletion
    In genetics, a deletion is a mutation in which a part of a chromosome or a sequence of DNA is missing. Deletion is the loss of genetic material. Any number of nucleotides can be deleted, from a single base to an entire piece of chromosome...

    , in genetics, is also called a deficiency
  • A deficiency judgment
    Deficiency judgment
    A deficiency judgment is an unsecured money judgment against a borrower whose mortgage foreclosure sale did not produce sufficient funds to pay the underlying promissory note, or loan, in full. The availability of a deficiency judgment depends on whether the lender has a recourse or nonrecourse...

    , in the law of real estate
  • A tax deficiency, an amount owed in taxes over and above what has been submitted in payment
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