what is fat tissue
Noun. 1. fatty tissue-a kind of body tissue containing stored fat that serves as a source of energy; it also cushions and insulates vital organs; fatty tissue protected them from the severe cold. adipose tissue, fat.animal tissue-the tissue in the bodies of animals. flab-loose or flaccid body fat.oun. 1. fatty tissue-a kind of body tissue containing stored fat that serves as a source of energy; it also cushions and insulates vital organs; fatty tissue protected them from the severe cold. adipose tissue, fat.