de·fi·cien·cy 
(dĭ-fĭshən-sē)
(dĭ-fĭshən-sē)n. pl. de·fi·cien·cies
1. The quality or condition of being deficient; incompleteness or inadequacy.
2. A lack or shortage, especially of something essential to health: a nutritional deficiency.
- abstracted
- abstractedly
- abstractedness
- abstracter
- abstract expressionism
- abstraction
- abstractional
- abstractionism
- abstractionist
- abstractive
- abstractly
- abstractness
- abstract of title
- abstruse
- abstrusely
- abstruseness
- absurd
- absurdism
- absurdist
- absurdity
- absurdly
- absurdness
- Abu Abdallah.
- Abu Ali al-Hasan Ibn al-Haytham.
- Abu Ali al-Husain ibn Abdullah ibn Sina.