Source : Webster's Revised Unabridged Dictionary (1913)

Immerge \Im*merge"\, v. t. [imp. & p. p. {Immerged}; p. pr. &
   vb. n. {Immerging}.] [L. immergere; pref. im- in + mergere to
   dip, plunge: cf. F. immerger. See {Merge}, and cf.
   {Immerse}.]
   To plungel into, under, or within anything especially a fuid;
   to dip; to immerse. See {Immerse}.

         We took . . . lukewarm water, and in it immerged a
         quantity of the leaves of senna.         --Boyle.

         Their souls are immerged in matter.      --Jer. Taylor.