deficiencynoun [C or U]uk us /dɪˈfɪʃ.ən.si/
- Severe iron deficiency can cause developmental delay and growth retardation.
- The teacher even implied that he was suffering from some kind of mental deficiency.
- The blood tests revealed a deficiency in certain key minerals and vitamins.
- There were clear deficiencies in the standard of service provided.
- Despite his deficiencies as a husband, he was a good father to his children.