The Collaborative International Dictionary of English v.0.48:

intervolve \in`ter*volve"\, v. t. [imp. & p. p. intervolved;
   p. pr. & vb. n. intervolving.] [Pref. inter- + L. volvere,
   volutum, to roll.]
   To involve one within another; to twist or coil together.
   --Milton.
   [1913 Webster]