deficiency
de.fi.cien.cy \di-'fish-*n-se-\ n 1: the quality or state of being deficient 2: INADEQUACY : as 2a: a shortage of substances necessary to health 2b: absence of one or more genes from a chromosome
Webster's English Dictionaryde.fi.cien.cy \di-'fish-*n-se-\ n 1: the quality or state of being deficient 2: INADEQUACY : as 2a: a shortage of substances necessary to health 2b: absence of one or more genes from a chromosome