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Meaning of Fidei Defensor*

Fi•de•i De•fen•sor

Pronunciation: (fē'de-ē" de-fen'sōr Eng. fī'dē-ī" di-fen'sôr), [key]
— Latin. Latin.
  1. Defender of the Faith: one of the titles of English sovereigns.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.