1

fat

play
adjective \ˈfat\

Definition of fat

fatter

;

fattest

  1. 1 :  notable for having an unusual amount of fat:a :  plump a cute, fat little babyb :  obese I can't believe I've let myself get so fat.c of a meat animal :  fattened for marketd of food :  oily, greasy a fat, rich cheese

  2. 2a :  well filled out :  thick, big a fat bookb :  full in tone and quality :  rich a gorgeous fat bass voice — Irish Digestc :  well stocked a fat larderd :  prosperous, wealthy grew fat on the war — Timee :  being substantial and impressive a fat bank account

  3. 3a :  richly rewarding or profitable a fat part in a movie a fat contractb :  practically nonexistent a fat chance

  4. 4 :  productive, fertile a fat year for crops

  5. 5 :  stupid, foolish

  6. 6 :  being swollen got a fat lip from the fight

  7. 7 of a baseball pitch :  easy to hit

fatness

noun

Examples of fat in a sentence

  1. The dog is getting fat because you feed him too much.

  2. I can't believe I've let myself get so fat.

  3. a fat book of poems

  4. a truck with fat tires

Origin and Etymology of fat

Middle English, from Old English fǣtt, past participle of fǣtan to cram; akin to Old High German feizit fat


First Known Use: before 12th century


2

fat

verb

Definition of fat

fatted

;

fatting

  1. transitive verb
  2. :  to make fat :  fatten

Origin and Etymology of fat

see 1fat


First Known Use: 14th century


3

fat

noun

Definition of fat

  1. 1 :  animal tissue consisting chiefly of cells distended with greasy or oily matter

  2. 2a :  oily or greasy matter making up the bulk of adipose tissue and often abundant in seedsb :  any of various compounds of carbon, hydrogen, and oxygen that are glycerides of fatty acids, are the chief constituents of plant and animal fat, are a major class of energy-rich food, and are soluble in organic solvents but not in waterc :  a solid or semisolid fat as distinguished from an oil

  3. 3 :  the best or richest part

  4. 4 :  obesity

  5. 5 :  something in excess :  superfluity trim the fat from the news operation — Ray Olson

fatless

play \ˈfat-ləs\ adjective

Examples of fat in a sentence

  1. people with excess body fat

  2. a diet and exercise program to help you gain muscle and lose fat

  3. Nuts contain a lot of fat.

  4. Trim the fat from the meat before you cook it.

  5. a diet low in fats

  6. fats like butter and olive oil

  7. trim the fat off the budget

Origin and Etymology of fat

see 1fat


First Known Use: 14th century

Other Biochemistry Terms



FAT Defined for English Language Learners

1

fat

play
adjective \ˈfat\

Definition of fat for English Language Learners

  • : having a lot of extra flesh on your body : having a lot of body fat

  • : having a full, rounded form

  • : unusually wide or thick


3

fat

noun

Definition of fat for English Language Learners

  • : the soft flesh on the bodies of people and animals that helps keep the body warm and is used to store energy

  • : an oily solid or liquid substance in food

  • : an amount that is more than what is usual or needed


FAT Defined for Kids

1

fat

play
adjective \ˈfat\

Definition of fat for Students

fatter

;

fattest

  1. 1 :  having much body fat a fat pig

  2. 2 :  1thick 1 a fat book

  3. 3 :  richly rewarding or profitable He signed a fat contract.

  4. 4 :  swollen up I fell and got a fat lip.

fatness

noun

2

fat

play
noun

Definition of fat for Students

  1. 1 :  animal or plant tissue containing much greasy or oily material

  2. 2 :  any of numerous compounds of carbon, hydrogen, and oxygen that make up most of animal or plant fat and that are important to nutrition as sources of energy

  3. 3 :  a solid fat as distinguished from an oil

  4. 4 :  the best or richest part the fat of the land


Medical Dictionary

1

fat

play
adjective \ˈfat\

Medical Definition of fat

fatter

;

fattest

  1. :  notable for having an unusual amount of fat; especially :  fleshy with superfluous flabby tissue that is not muscle :  obese

fatness

noun

2

fat

noun

Medical Definition of fat

  1. 1:  animal tissue consisting chiefly of cells distended with greasy or oily matter—see brown fat

  2. 2a:  oily or greasy matter making up the bulk of adipose tissueb:  any of numerous compounds of carbon, hydrogen, and oxygen that are glycerides of fatty acids, are the chief constituents of plant and animal fat, are a major class of energy-rich food, and are soluble in organic solvents (as ether) but not in waterc:  a solid or semisolid fat as distinguished from an oil

  3. 3:  the condition of fatness :  obesity



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