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Definition: client


(1) A desktop computer, laptop, smartphone or tablet, as well as any other electronic device that sends or receives data from a server. The term implies a connection to a wired or wireless network. Contrast with server. See client application, client download, client/server, thin client and fat client.

(2) One end of the spectrum in a request/supply relationship between programs. See X Window and OLE.

(3) The customer of a vendor or consultant. The client of an IT department is the end user.