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WordReference Random House Learner's Dictionary of American English © 2024in•ert /ɪnˈɜrt/USA pronunciation adj. - having no power of action (opposed to active):inert matter.
- Chemistry(of chemical substances) having little or no ability to react in a chemical reaction:Nitrogen is an inert gas.
- inactive or sluggish:He stood inert as we rushed toward her.
in•ert•ly, adv. in•ert•ness, n. [uncountable] WordReference Random House Unabridged Dictionary of American English © 2024in•ert (in ûrt′, i nûrt′),USA pronunciation adj. - having no inherent power of action, motion, or resistance (opposed to active):inert matter.
- Chemistryhaving little or no ability to react, as nitrogen that occurs uncombined in the atmosphere.
- Drugs[Pharm.]having no pharmacological action, as the excipient of a pill.
- inactive or sluggish by habit or nature.
- Latin inert- (stem of iners) unskillful, equivalent. to in- in-3 + -ert-, combining form of art- (stem of ars) skill; see art1
- 1640–50
- 1.See corresponding entry in Unabridged immobile, unmoving, lifeless, motionless.
- 4.See corresponding entry in Unabridged See inactive.
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