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flavin adenine dinucleotide

n. Abbr. FAD

A coenzyme, C₂₇H₃₃N₉O₁₅P₂, that is a derivative of riboflavin and functions in certain oxidation-reduction reactions in the body.

Indo-European & Semitic Roots Appendices

Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:

Indo-European Roots

Semitic Roots

The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.

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