fad






noun

  1. a temporary fashion, notion, manner of conduct, etc., especially one followed enthusiastically by a group.

noun informal

  1. an intense but short-lived fashion; craze
  2. a personal idiosyncrasy or whim

noun

  1. biochem flavin adenine dinucleotide: an ester of riboflavin with ADP that acts as the prosthetic group for many flavoproteinsSee also FMN
n.

1834, “hobby, pet project;” 1881 as “fashion, craze,” perhaps shortened from fiddle-faddle. Or perhaps from French fadaise “trifle, nonsense,” ultimately from Latin fatuus “stupid.”

abbr.

  1. flavin adenine dinucleotide

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