Top Definition
Short for Trans Fatty Acid: An artery-clogging fat that is formed when vegetable oils are hardened into margarine or shortening. Many food companies use trans fat instead of oil because it reduces cost, extends storage life, and can improve flavor and texture. Food companies are also not required to list trans fat on nutrition labels (until 2006) even though trans fat is worse than saturated fat.
While some foods like bakery items and fried foods are obvious sources of trans fat, other processed foods, such as cereals and waffles, can also contain trans fat. One tip to determine the amount of trans fat in a food is to read the ingredient label and look for shortening, hydrogenated or partially hydrogenated oil. The higher up on the list these ingredients appear, the more trans fat.
by inane5 February 08, 2005
Like the freshman fifteen, the weight put on by a transgender after transitioning to the opposite sex.

This term is LGBT slang.
OMG, Chris put on so much trans fat after having her bottom surgery to transition MTF.
by Hyacinth Bucket July 10, 2008
A person who believes they are a fat person living in a skinny body.
Skinny girl #1: "I feel so fat!!"
Skinny girl #2: "You might FEEL fat, but I'M transfat."
by transfatahoy February 23, 2012
One who can seemingly eat all they want and stay slim. A fat person trapped in a skinny person's body.
"I'll need a bigger serving. I'm Transfat."
by Darth-Vapor March 21, 2016
When you're a skinny person thats fat on the inside.
Her waist said size zero but her plate plate said size 22.

Pretty sure that petite asian girl was a transfat because I saw her go back for 5ths at the buffet.
by H.Barker December 08, 2014
(transfered fat)

The amount of fat you lose = the amount of fat your friend gains

Also see Fat Displacement.
Whoever said trans fat is bad for you?
by catfight12 January 11, 2009
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