The Collaborative International Dictionary of English v.0.48:

Infold \In*fold"\ ([i^]n*f[=o]ld"), v. t. [imp. & p. p.
   Infolded; p. pr. & vb. n. Infolding.] [Pref. in- in +
   fold.] [Written also enfold.]
   1. To wrap up or cover with folds; to envelop; to inwrap; to
      inclose; to involve.
      [1913 Webster]

            Gilded tombs do worms infold.         --Shak.
      [1913 Webster]

            Infold his limbs in bands.            --Blackmore.
      [1913 Webster]

   2. To clasp with the arms; to embrace.
      [1913 Webster]

            Noble Banquo, . . . let me infold thee,
            And hold thee to my heart.            --Shak.
      [1913 Webster]

WordNet (r) 3.0 (2006):

infolding
    n 1: the folding in of an outer layer so as to form a pocket in
         the surface; "the invagination of the blastula" [syn:
         invagination, introversion, intussusception,
         infolding]