fad

n. fashion, trend, passing style; craze

In biochemistry, flavin adenine dinucleotide (FAD) is the precursor molecule to FADH₂. Upon bonding to two hydrogen atoms, FAD is then changed to FADH2 and is turned into an energy-carrying molecule. FAD accommodates two equivalents of Hydrogen; both the hydride and the proton ions. This is used by organisms to carry out energy requiring processes. FAD, and the more common NAD, are reduced in the citric acid cycle during aerobic respiration.
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A fad refers to a fashion that becomes popular in a culture relatively quickly, but loses popularity dramatically. Some fads may come back if another generation finds out about it and gets interested in it. For example Dayglo paint was a fad in the USA the late 1970s. Then Dayglo accessories and clothes (such as cycling shorts and Dayglo socks) had a comeback in 1984–1989. It is arguable that a fad that remains popular for a significant amount of time typically loses its significance in current popular culture as it evolves and becomes accepted into a society's everyday culture as trends (e.g. television, Internet, music, video games and dances).
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FAD flavin adenine dinucleotide. FAD abbr. flavin adenine dinucleotide FAD, n abbreviation for flavinadenine dinucleotide. FAD 1. [more]Fad - Community and Resources

Noun
1. an interest followed with exaggerated zeal; "he always follows the latest fads"; "it was all the rage that season"
(synonym) craze, furor, furore, cult, rage
(hypernym) fashion

["FAD, A Simple and Powerful Database Language", F. Bancilon et al, Proc 13th Intl Conf on VLDB, Brighton, England, Sep 1987].