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[sem-ee-kon-shuh s, sem-ahy-] /ˌsɛm iˈkɒn ʃəs, ˌsɛm aɪ-/
half-conscious; not fully conscious.
Origin of semiconscious
1830-40; semi- + conscious
Related forms
semiconsciously, adverb
semiconsciousness, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for semiconscious
  • The bullet--low velocity and small caliber--had left him not only alive but semiconscious.
  • If you encounter a swallow that appears to be only semiconscious, the best thing you can do is to leave it alone.
  • In the emergency department, he was semiconscious but combative.
  • There is the possibility of missed injury, especially in semiconscious or unconscious patients.
British Dictionary definitions for semiconscious


not fully conscious
Derived Forms
semiconsciously, adverb
semiconsciousness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for semiconscious

also semi-conscious, 1838, from semi- + conscious. Related: Semiconsciously; semiconsciousness.

Online Etymology Dictionary, © 2010 Douglas Harper
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semiconscious in Medicine

semiconscious sem·i·con·scious (sěm'ē-kŏn'shəs, sěm'ī-)
Not completely aware of sensations; partially conscious.

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