a combining form used, with the meanings “social,” “sociological,” or “society,” in the formation of compound words: sociometry; socioeconomic.

combining form of Latin socius a fellow, companion, comrade; see -o- Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
combining form
denoting social or society: socioeconomic; sociopolitical; sociology

Collins English Dictionary - Complete & Unabridged 10th Edition
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Word Origin & History

combining form of L. socius "companion, associate" (see social). Common in compounds since c.1880, e.g. sociobiology "study of the biological basis of social behavior" (1946); socio-economic (1883).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

socio- pref.

  1. Society: sociocentric.

  2. Social: sociogenic.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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