periphery

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periphery

Anatomy the surface or outermost part of the body or one of its organs or parts
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

periphery

see CENTRE AND PERIPHERY.
Collins Dictionary of Sociology, 3rd ed. © HarperCollins Publishers 2000

periphery

[pə′rif·ə·rē]
(mathematics)
The bounding curve of a surface or the surface of a solid.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.