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1. Physics The tendency of a body at rest to remain at rest or of a body in straight line motion to stay in motion in a straight line unless acted on by an outside force; the resistance of a body to changes in momentum.
2. Resistance or disinclination to motion, action, or change: an entrenched bureaucracy's inertia.

[Latin, idleness, from iners, inert-, inert; see inert.]

in·er′tial adj.
in·er′tial·ly adv.


by inertia
References in periodicals archive ?
Limited Tenders are invited for Inertially Stablized Pan Tilt Unit
The program will focus on intermediate density fusion approaches between low-density, magnetically confined plasmas and high-density, inertially confined plasmas.
As standard payload ScanEagle carries either an inertially stabilized electro-optical or an infrared camera.
For a rotating disk of type II superconductor, the acceleration of inertially moving cooper pairs in the superconductor is equivalent to a gravitational field, which may couple with the Ginzburg-Landau scalar field to produce an extra shielding effect on gravity as shown in [21].
Employment could have responded more inertially to the 2008-09 recession because employers expected it to be shorter than usual.
NIF will focus on a process known as inertially confined fusion, in which these extreme temperatures are achieved using ultra powerful lasers.
If a body is moving inertially or is at rest, then the action of some other body determined it to one or the other state and only then does the body, if left to itself, persevere at rest or in uniform rectilinear motion.
OAI's inertially stabilized turret allows this multi-mission system to deliver actionable intelligence of long tract or high value assets to key decision-makers in real time.
This led us to develop the first practical experimental system to study the acute and cumulative effects of daily inhalation exposures to inertially concentrated ambient-air FPM (CAPs) in Sterling Forest (Tuxedo, NY), in apo-lipoprotein E-deficient (Apo[E.