C1 a state of not having, or not having enough, of something that is needed不足,缺乏,缺少
More examples
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.
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