verb (used with object)
to blunt; dull; deaden.

1350–1400; Middle English < Latin obtundere to beat at, equivalent to ob- ob- + tundere to strike

obtundent, adjective
obtundity, noun
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World English Dictionary
obtund (ɒbˈtʌnd)
rare (tr) to deaden or dull
[C14: from Latin obtundere to beat against, from ob- against + tundere to belabour]
adj, —n

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

c.1400, (trans.) "to render dead, make dull," used occasionally in English, especially in medical jargon; from L. obtundere (see obtuse). Related: Obtundation; obtunded.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

obtund ob·tund (ŏb-tŭnd')
v. ob·tund·ed, ob·tund·ing, ob·tunds
To dull or blunt, especially sensation or pain.

ob·tund'ent adj.
ob·tun'di·ty n.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
The other guests, strangers all, lolling around us obtunded with tryptophan.
The optimal method of clearing the cervical spine in obtunded trauma patients is unclear.
If the patient is excessively sedated or mentally obtunded as judged by an inability to follow verbal commands.
She was somewhat obtunded but answered questions appropriately and complied with commands.
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