Source : Webster's Revised Unabridged Dictionary (1913)

Insphere \In*sphere"\, v. t. [imp. & p. p. {Insphered}; p. pr. &
   vb. n. {Insphering}.] [Cf. {Ensphere}.]
   To place in, or as in, an orb a sphere. Cf. {Ensphere}.

         Bright a["e]rial spirits live insphered In regions mild
         of calm and serene air.                  --Milton.