"Devitaminized". 1 . A word composed of the prefix 'des-' and 'vitaminized'. The prefix Des- denotes negation or inversion of the meaning of the simple word to which it is prefixed . 2 . Adjective. Lacking in vitamins. 3 . Said of a person who suffers from a deficiency or deficiency of one or more essential vitamins. Hypovitaminosis.