One who is suffering from any disease or behavioral disorder and is under treatment for it. Cf.:case (1). [L. patiens, pres. p. of patior, to suffer]
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pa·tient 'pā-shənt n
1) a sick individual esp. when awaiting or under the care and treatment of a physician or surgeon <the hospital is equipped to handle 500 \patients>
2) a client for medical service (as of a physician or dentist) <a good practice with a large number of \patients>
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pa·tient (paґshənt) [L. patiens] a person who is ill or who is undergoing treatment for disease.Medical dictionary. 2011.