[ 'dɛfɪsɪt , 'di:- ]
■ noun
1》 the amount by which something, especially a sum of money, falls short.
↘an excess of expenditure or liabilities over income or assets in a given period.
2》 technical a deficiency or failing, especially in a neurological or psychological function.
Origin
C18: via Fr. from L. ~ 'it is lacking', from deficere (see defect 1 ).