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inertial

American  
[in-ur-shuhl] / ɪnˈɜr ʃəl /

adjective

  1. relating to or characterized by inertia or inactivity.

  2. Physics. of or relating to the Newtonian property of matter, according to which matter remains at rest or in motion in a straight line until acted upon by an external force.


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The guidance system also includes inertial navigation; future models are planned to have seeker modes for hitting moving targets.

From The Wall Street Journal • Mar. 19, 2026

The guidance system also includes inertial navigation; future models are planned to have seeker modes for hitting moving targets.

From The Wall Street Journal • Mar. 19, 2026

The drones then travel long distances towards their target using gyroscopes that measure their speed, direction and position -- known as an "inertial navigation system".

From Barron's • Mar. 16, 2026

For air and sea navigation, start-ups are developing alternative technologies using Earth's magnetic field or inertial navigation.

From Barron's • Mar. 8, 2026

Orion was designed to utilize explosions of hydrogen bombs, nuclear weapons, against an inertial plate, each explosion providing a kind of “putt-putt,” a vast nuclear motorboat in space.

From "Cosmos" by Carl Sagan