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inert

[in-urt, ih-nurt] /ɪnˈɜrt, ɪˈnɜrt/
adjective
1.
having no inherent power of action, motion, or resistance (opposed to active):
inert matter.
2.
Chemistry. having little or no ability to react, as nitrogen that occurs uncombined in the atmosphere.
3.
Pharmacology. having no pharmacological action, as the excipient of a pill.
4.
inactive or sluggish by habit or nature.
Origin
1640-1650
1640-50; < Latin inert- (stem of iners) unskillful, equivalent to in- in-3 + -ert-, combining form of art- (stem of ars) skill; see art1
Related forms
inertly, adverb
inertness, noun
noninert, adjective
noninertly, adverb
noninertness, noun
uninert, adjective
uninertly, adverb
Synonyms
1. immobile, unmoving, lifeless, motionless. 4. See inactive.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for noninert

inert

/ɪnˈɜːt/
adjective
1.
having no inherent ability to move or to resist motion
2.
inactive, lazy, or sluggish
3.
having only a limited ability to react chemically; unreactive
Derived Forms
inertly, adverb
inertness, noun
Word Origin
C17: from Latin iners unskilled, from in-1 + ars skill; see art1
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 noninert
inert
1647, from Fr. inerte (16c.), from L. inertem (nom. iners) "unskilled, inactive," from in- "without" + ars (gen. artis) "skill" (see art (n.)).
Online Etymology Dictionary, © 2010 Douglas Harper
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noninert in Medicine

inert in·ert (ĭn-ûrt')
adj.

  1. Sluggish in action or motion; lethargic.

  2. Not readily reactive with other chemical elements; forming few or no chemical compounds.

  3. Having no pharmacologic or therapeutic action.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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noninert in Science
inert
  (ĭn-ûrt')   
Not chemically reactive.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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