AskDefine | Define exertion

Dictionary Definition

exertion n : use of physical or mental energy; hard work; "he got an A for effort"; "they managed only with great exertion" [syn: effort, elbow grease, travail, sweat]

User Contributed Dictionary



  • /əgˈzɝʃən/


  1. The action of exerting; effort; action requiring physical strength.


the action of exerting

Extensive Definition

Exertion is a concept describing the use of physical or perceived energy. It normally connotates a strenuous or costly effort related to physical, philosophical actions and work.


In physics exertion is use of energy against, or for, inertia as described by Isaac Newton's First Law of Motion. In mechanics it describes use of force against a body in direction of its motion (see vector).


In medical terms exertion is the expenditure of energy by skeletal muscles. The intensity of this action can be measured by the rate of which oxygen is expended, heat is produced and heart rate. A frequently used term is rating of perceived exertion or RPE-scale , also known as the Borg scale, which is use of a scale to indicate a quantitative feeling of fatigue.


Exertion can be proxied or extended when applied to various human-machine interfaces, like prosthesis, remote control - even for games.

See also


Synonyms, Antonyms and Related Words

action, active use, activity, appliance, application, assiduity, assiduousness, consumption, determination, diligence, drive, effort, elbow grease, employ, employment, endeavor, exercise, exercising, good use, hard pull, hard usage, hard use, ill use, industry, misuse, operation, pains, push, resolution, rough usage, sedulity, sedulousness, strain, striving, struggle, toil, trouble, usage, use, using up, while, work, wrong use
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