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WordReference Random House Learner's Dictionary of American English © 2024in•er•tia /ɪnˈɜrʃə/USA pronunciation n. [uncountable]- a feeling of inertness;
sluggishness:was filled with inertia and had no desire to get out of bed. - Physicsthe property of matter by which it keeps its state so long as it is not acted upon by an external force:to overcome the inertia of such a huge mass.
in•er•tial, adj.: inertial guidance systems. WordReference Random House Unabridged Dictionary of American English © 2024in•er•tia (in ûr′shə, i nûr′-),USA pronunciation n. - inertness, esp. with regard to effort, motion, action, and the like;
inactivity;
sluggishness. - Physics
- 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.
- Medicinelack of activity, esp. as applied to a uterus during childbirth when its contractions have decreased or stopped.
- Latin: lack of skill, slothfulness. See inert, -ia
- 1705–15
- 1.See corresponding entry in Unabridged . torpor, inaction, laziness.
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