- inertness, especially with regard to effort, motion, action, and the like; inactivity; sluggishness.
- the property of matter by which it retains its state of rest or its velocity along a straight line so long as it is not acted upon by an external force.
- an analogous property of a force: electric inertia.
- Medicine/Medical. lack of activity, especially as applied to a uterus during childbirth when its contractions have decreased or stopped.
Origin of inertia
SynonymsSee more synonyms on Thesaurus.com
Examples from the Web for inertia
Bureaucratic inertia is, by long tradition, the most efficient dispatcher of scandals.The Castration of Alan Turing, Britain’s Code-Breaking WWII Hero
November 29, 2014
By the time ACT UP came around to deal with the inertia, it seemed like a raging inevitability that hit with the force of a blaze.‘The Normal Heart’ and Hope in the Battlefield of AIDS
May 24, 2014
Zach Weisberg, the founding editor of The Inertia, a surf culture website, covered the U.S. Open of Surfing.U.S. Open of Surfing Turns Into Riot
July 31, 2013
Businesses have a fair amount of inertia, and a strong reluctance to fire people.How to Think About the Minimum Wage
February 14, 2013
The answer, to the surprise of some then and probably the captains of inertia today, was no.Let's Revisit the Negative Income Tax
February 1, 2013
The inertia of the meteor has persisted, not as energy, but as a factor of energy.The Machinery of the Universe
Amos Emerson Dolbear
For that sort of inertia in woman is always enigmatic and therefore menacing.Chance
That was because if there were no inertia there would be no centrifugal force.
At the same time he overcame part of your inertia, for he made you move a little.
The inertia of the stricken beings on the platform was broken by his move.
- the state of being inert; disinclination to move or act
- the tendency of a body to preserve its state of rest or uniform motion unless acted upon by an external force
- an analogous property of other physical quantities that resist changethermal inertia
Word Origin and History for inertia
1713, introduced as a term in physics 17c. by German astronomer and physician Johann Kepler (1571-1630), from Latin inertia "unskillfulness, idleness," from iners (genitive inertis) "unskilled, inactive;" see inert. Used in Modern Latin by Newton (1687). Sense of "apathy" first recorded 1822.
- The tendency of a body to resist acceleration; the tendency of a body at rest to remain at rest or of a body in motion to stay in motion in a straight line unless acted on by an outside force.
- Resistance or disinclination to motion, action, or change.
- The resistance of a body to changes in its momentum. Because of inertia, a body at rest remains at rest, and a body in motion continues moving in a straight line and at a constant speed, unless a force is applied to it. Mass can be considered a measure of a body's inertia. See more at Newton's laws of motion. See also mass.