(biochemistry) any fatty acid required for human metabolism that cannot be synthesized by the body and must be present in the diet; originally designated as vitamin F

(idiomatic) To begin a festive celebration and rejoicing for someone's long-awaited return.

An unsaturated fatty acid in which one or more of the double bonds has the trans orientation instead of the usual cis orientation.

That causes weight gain; often of high calorie food with relatively little nutritive value.

The act of making something fatter, particularly in reference or allusion to livestock. / The act of becoming fatter.

present participle of fatten

(transitive) To cause (a person or animal) to be fat or fatter. / (intransitive, of a person or animal) To become fat or fatter.

superlative form of fat: most fat

simple past tense and past participle of fatten; fatted

comparative form of fat: more fat