Answer:
FAD. abbreviation. flavin adenine dinucleotide. MLA Style. "Fad."
A fad, trend, or craze is any form of collective behaviour that develops within a culture, a generation or social group in which a group of people enthusiastically follow an impulse for a finite period. Fads are objects or behaviours that achieve short-lived popularity but fade away.
an intense and widely shared enthusiasm for something, especially one that is short-lived; a craze.
Examples of fads include the Hula-hoop®, Pet Rock®, Pokémon®, the yo-yo and Beanie Babies®.