Situated away from the center, as opposed to centrally located. For example, peripheral vision means the type of vision that allows one to see objects that are not in the center of one’s visual field. The word "peripheral" comes from the Greek "peripheria" ("peri-", around or about + "pherein", to bear, carry). An IV (intravenous) catheter is a peripheral line.
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1. Relating to or situated at the periphery. 2. Situated nearer the periphery of an organ or part of the body in relation to a specific reference point; opposite of central (centralis). SYN: peripheralis [TA], eccentric (3).

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pe·riph·er·al pə-'rif-(ə-)rəl adj
1) of, relating to, involving, forming, or located near a periphery or surface part (as of the body)
2) of, relating to, affecting, or being part of the peripheral nervous system <\peripheral nerves>
3) of, relating to, or being the outer part of the visual field <good \peripheral vision>
4) of, relating to, or being blood in the systemic circulation <\peripheral lymphocytes> <\peripheral resistance> <\peripheral blood>
pe·riph·er·al·ly adv

Medical dictionary. 2011.

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  • peripheral — (adj.) 1803, from PERIPHERY (Cf. periphery) + AL (Cf. al) (1). Related: Peripherally. Peripherals peripheral devices of a computer is from 1966 …   Etymology dictionary

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