Deficiency

Look up deficiency in Wiktionary, the free dictionary.

A deficiency is a lack of something. Example

there is a deficiency of oxygen in the air and we shall soon suffocate.

• In mathematics, a deficient number is a number n for which σ(n) < 2n.
• In medicine there are a variety of nutrient deficiencies:
  • Avitaminosis is a deficiency of vitamins.
  • Boron deficiency (medicine)
  • Chromium deficiency
  • Iron deficiency (medicine)
  • Iodine deficiency
  • Magnesium deficiency (medicine)
  • Micronutrient deficiency
• In construction, a deficiency is an item, or condition that is considered sub-standard, or below minimum expectations, such as those mandated by either drawings or specifications or the building code or the fire code, and/or any combination of the foregoing. Deficiencies are routinely discussed and dealt with in construction site meetings.
• In genetics, a genetic deletion is also called a Deficiency.
• In real estate law, a deficiency in the ability to pay off a debt is called a deficiency judgment or deficiency judgement.

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