analgesia

analgesia

[an-l-jee-zee-uh, -see-uh]
noun Medicine/Medical.
absence of sense of pain.

Origin:
1700–10; < Neo-Latin < Greek analgēsía painlessness, equivalent to análgēt(os) without pain (an- an-1 + álg(os) pain + -ētos adj. suffix) + -ia -ia

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World English Dictionary
analgesia or analgia (ˌænəlˈdʒiːzɪə, -sɪə, ænˈældʒɪə)
 
n
1.  inability to feel pain
2.  the relief of pain
 
[C18: via New Latin from Greek: insensibility, from an- + algēsis sense of pain]
 
analgia or analgia
 
n
 
[C18: via New Latin from Greek: insensibility, from an- + algēsis sense of pain]

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

analgesia
"absence of pain," 1706, medical L., from Gk. analgesia "painlessness, insensibility," from analgetos "without pain, insensible to pain" (also "unfeeling, ruthless"), from an- "not" + algein "to feel pain" (see analgesic).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

analgesia an·al·ge·si·a (ān'əl-jē'zē-ə, -zhə)
n.
A deadening or absence of the sense of pain without loss of consciousness.

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

analgesia

loss of sensation of pain that results from an interruption in the nervous system pathway between sense organ and brain. Different forms of sensation (e.g., touch, temperature, and pain) stimulating an area of skin travel to the spinal cord by different nerve fibres in the same nerve bundle. Therefore, any injury or disease affecting the nerve would abolish all forms of sensation in the area supplied by it. When sensory nerves reach the spinal cord, however, their fibres separate and follow different courses to the brain. Thus, it is possible for certain forms of sensation to be lost, while others are preserved, in diseases that affect only certain areas of the spinal cord. Because pain and temperature sensations often travel the same path, both may be lost together. Diseases of the spinal cord that may cause analgesia without loss of the sensation of touch are tabes dorsalis, syringomyelia, and tumours of the cord. The term is also used for pain relief induced by the action of such medications as aspirin, codeine, and morphine.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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