The Collaborative International Dictionary of English v.0.48:

Nauseate \Nau"se*ate\, v. i. [imp. & p. p. Nauseated; p. pr. &
   vb. n. Nauseating.] [L. nauseare, nauseatum, fr. nausea.
   See Nausea.]
   To become squeamish; to feel nausea; to turn away with
   disgust.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Nauseate \Nau"se*ate\, v. t.
   1. To affect with nausea; to sicken; to cause to feel
      loathing or disgust.
      [1913 Webster]

   2. To sicken at; to reject with disgust; to loathe.
      [1913 Webster]

            The patient nauseates and loathes wholesome foods.
                                                  --Blackmore.
      [1913 Webster]

WordNet (r) 3.0 (2006):

nauseate
    v 1: upset and make nauseated; "The smell of the food turned the
         pregnant woman's stomach"; "The mold on the food sickened
         the diners" [syn: sicken, nauseate, turn one's
         stomach]
    2: cause aversion in; offend the moral sense of; "The
       pornographic pictures sickened us" [syn: disgust, revolt,
       nauseate, sicken, churn up]