The definition of deficient is a person of thing that is incomplete or lacking something needed.(adjective)
An example of deficient is a person who does not have enought iron; the person is iron deficient.
See deficient in Webster's New World College Dictionary
Origin: L deficiens: see deficiency
See deficient in American Heritage Dictionary 4
Origin: Latin dēficiēns, dēficient-
Origin: , present participle of dēficere, to fail, be wanting; see defect.
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