inertia\'s

[in-ur-shuh, ih-nur-]

in·er·tia

[in-ur-shuh, ih-nur-]
noun
1.
inertness, especially with regard to effort, motion, action, and the like; inactivity; sluggishness.
2.
Physics.
a.
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.
b.
an analogous property of a force: electric inertia.
3.
Medicine/Medical. lack of activity, especially as applied to a uterus during childbirth when its contractions have decreased or stopped.

Origin:
1705–15; < Latin: lack of skill, slothfulness. See inert, -ia

in·er·tial, adjective
non·i·ner·tial, adjective


1. torpor, inaction, laziness.

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Inertia's is always a great word to know.
So is doohickey. Does it mean:
a gadget; dingus; thingumbob.
an extraordinary or unusual thing, person, or event; an exceptional example or instance.
American Heritage
Science Dictionary
inertia   (ĭ-nûr'shə)  Pronunciation Key 
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.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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