Also found in: Thesaurus, Medical, Legal, Encyclopedia.


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 ?
2% when wearing HS than when wearing LS during an inertially invoked dorsiflexion movement.
The service requires a hypersonic, GPS- and inertially guided strike capability for firing against high-value fixed and moving targets in denied environments.
As standard payload ScanEagle carries either an inertially stabilized electro-optical or an infrared camera.
For tests which are inertially reacted one must be careful about the manipulation of simulator inputs so that they do not excite unnatural dynamics and so that actual dynamics are excited as they would be in the field.
In papers filed with the court, Godfrey and Bloomer state that "The unrebutted scientific evidence shows that a Saturn Ion operated with only an ignition key is substantially less susceptible to inadvertent rotation, and cannot inertially rotate at all, than an ignition switch with a key having multiple items attached to its ring,"
Williams, "Strategic inertial navigation systems--high-accuracy inertially stabilized platforms for hostile environments," IEEE Control Systems Magazine, vol.
Fan, "LuGre-model-based friction compensation in direct-drive inertially stabilization platforms," in Proceedings of the 6th IFAC Symposium on Mechatronic Systems, pp.
Fritsch, 1989: A mesoscale convective complex-generated inertially stable warm core vortex.
2008, Strategic inertial navigation systems-high-accuracy inertially stabilized platforms for hostile environments.
The program will focus on intermediate density fusion approaches between low-density, magnetically confined plasmas and high-density, inertially confined plasmas.
Whether a curved, space-time continuum has the capacity to inertially resist the emergence of an unlimited number of identical, geometrically related processing points could someday be tested in particle accelerators, such as the large hadron collider (LHC), built in collaboration with over 10,000 scientists and engineers from over 100 countries, involving many universities and laboratories.
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].