American English

Definition of diet noun from the Oxford Advanced American Dictionary



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  1. 1[countable, uncountable] the food that you eat and drink regularly to have a healthy, balanced diet the Japanese diet of rice, vegetables, and fish to receive advice on diet and nutrition
  2. 2[countable] a limited variety or amount of food that you eat for medical reasons or because you want to lose weight; a time when you only eat this limited variety or amount a low-fat, salt-free diet diet soda (= with fewer calories than normal) I decided to go on a diet (= to lose weight) before my vacation.
  3. 3[singular] a diet of something (disapproving) a large amount of a restricted range of activities Children today are brought up on a diet of television cartoons and reality shows.
  4. NAmE//ˈdaɪəˌtɛri//
    adjective [usually before noun] dietary advice/changes/habits dietary fiber special dietary needs
  5. Topic CollocationsDiet and Exerciseweight put on/gain/lose weight/a few pounds watch/control/struggle with your weight be/become seriously overweight/underweight be/become clinically/morbidly obese achieve/facilitate/promote/stimulate weight loss slim down to 160 pounds combat/prevent/tackle/treat obesity develop/have/suffer from/struggle with/recover from anorexia/bulimia/an eating disorder be on/go on/follow a crash/strict diet have/suffer from a negative/distorted body image have/develop a positive/healthy/realistic body imagehealthy eating eat a balanced diet/healthily/well get/provide/receive adequate/proper nutrition contain/get/provide essential nutrients/vitamins/minerals be high/low in calories/fat/fiber/protein/vitamin D/Omega-3 fatty acids/trans-fats contain (no)/use/be full of/be free from additives/chemical preservatives/artificial sweeteners/high-fructose corn syrup avoid/cut down on/cut out alcohol/caffeine/fatty foods stop/quit smokingexercise get regular exercise do moderate/strenuous/vigorous exercise play football/hockey/tennis/soccer go jogging/running go to/visit/hit/work out at the gym strengthen/tone/train your stomach muscles contract/relax/stretch/use/work your lower-body muscles build (up)/gain muscle improve/increase your stamina/energy levels/physical fitness burn/consume/expend caloriesstaying healthy be/get/keep/stay healthy/in shape lower your cholesterol/blood pressure boost/stimulate/strengthen your immune system prevent/reduce the risk of heart disease/high blood pressure/diabetes/osteoporosis reduce/relieve/manage/combat stress enhance/promote relaxation/physical and mental well-being
See the Oxford Advanced Learner's Dictionary entry: diet