fatty

1 [fat-ee]
adjective, fattier, fattiest.
1.
consisting of, containing, or resembling fat: fatty tissue.
2.
Pathology. characterized by overproduction or excessive accumulation of fat.

Origin:
1350–1400; Middle English; see fat, -y1

fattily, adverb
fattiness, noun
Dictionary.com Unabridged

fatty

2 [fat-ee]
noun, plural fatties. Informal: Often Disparaging and Offensive.
a person who is overweight or obese.

Origin:
1790–1800; fat + -y2

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
fatty (ˈfætɪ)
 
adj , -tier, -tiest
1.  containing, consisting of, or derived from fat
2.  having the properties of fat; greasy; oily
3.  (esp of tissues, organs, etc) characterized by the excessive accumulation of fat
 
n , -tier, -tiest, -ties
4.  informal a fat person
 
'fattily
 
adv
 
'fattiness
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

fatty
late 14c., from fat + -y (2). As a name for a fat person, attested by 1797.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

fatty fat·ty (fāt'ē)
n.

  1. Containing or composed of fat.

  2. Characteristic of fat; greasy.

  3. Derived from or chemically related to fat.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Slang Dictionary

fatty definition


  1. n.
    a derogatory nickname for a fat person. (Cruel. Also a rude term of address.) : Okay, fatty, you get the biggest piece of cake because you deserve it.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition.
Copyright 2007. Published by McGraw-Hill Education.
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Example sentences for fatty
It is a triglyceride, an ester derived from glycerol and three fatty acid groups.
The oil from some algae have high levels of unsaturated fatty acids.
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