Definition of exercise noun from the Oxford Advanced Learner's Dictionary

Oxford3000

exercise

noun
ˈeksəsaɪz
 
; ˈeksərsaɪz
 
 
 

activity/movements

1 [uncountable] physical or mental activity that you do to stay healthy or become strongerSwimming is good exercise.I don't get much exercise sitting in the office all day.The mind needs exercise as well as the body.vigorous/gentle exercise (British English) to take exercise2 [countable] a set of movements or activities that you do to stay healthy or develop a skillbreathing/relaxation/stretching exercisesexercises for the pianoRepeat the exercise ten times on each leg.
 

questions

3 [countable] a set of questions in a book that tests your knowledge or practises a skillgrammar exercisesDo exercise one for homework.
 

use of power/right/quality

4 [uncountable] exercise of something the use of power, a skill, a quality or a right to make something happenthe exercise of power by the governmentthe exercise of discretion
 

for particular result

5 [countable] an activity that is designed to achieve a particular resulta communications exerciseIn the end it proved a pointless exercise.exercise in something an exercise in public relationsStaying calm was an exercise in self-control.
 

for soldiers

6 [countable, usually plural] a set of activities for training soldiersmilitary exercises
 

ceremonies

7 exercises [plural] (North American English) ceremoniescollege graduation exercises
Usage noteUsage note: Diet and exerciseWeightput on/gain/lose weight/a few kilos/a few poundswatch/control/struggle with your weightbe/become seriously overweight/underweightbe/become clinically/morbidly obeseachieve/facilitate/promote/stimulate weight lossslim down to 70 kilos/(British English) 11 stone/(especially North American English) 160 poundscombat/prevent/tackle/treat obesitydevelop/have/suffer from/struggle with/recover from anorexia/bulimia/an eating disorderbe on/go on/follow a crash/strict diethave/suffer from a negative/poor body imagehave/develop a positive/healthy body imageHealthy eatingeat a balanced diet/healthily/sensiblyget/provide/receive adequate/proper nutritioncontain/get/provide essential nutrients/vitamins/mineralsbe high/low in calories/fat/fibre/(especially US) fiber/protein/vitamin D/Omega-3 fatty acidscontain (no)/use/be full of/be free from additives/chemical preservatives/artificial sweetenersavoid/cut down on/cut out alcohol/caffeine/fatty foodsstop/give up/(especially North American English) quit smokingExercise(British English) take regular exercisedo moderate/strenuous/vigorous exerciseplay football/hockey/tennisgo cycling/jogging/runninggo to/visit/(especially North American English) hit/work out at the gymstrengthen/tone/train your stomach musclescontract/relax/stretch/use/work your lower-body musclesbuild (up)/gain muscleimprove/increase your stamina/energy levels/physical fitnessburn/consume/expend caloriesStaying healthybe/get/keep/stay healthy/in shape/(especially British English) fitlower your cholesterol/blood pressureboost/stimulate/strengthen your immune systemprevent/reduce the risk of heart disease/high blood pressure/diabetes/osteoporosisreduce/relieve/manage/combat stressenhance/promote relaxation/physical and mental well-being