The Collaborative International Dictionary
Insphering
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.
Wiktionary
insphering
vb. (present participle of insphere English)