infolding

from 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}]

from 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.
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            Infold his limbs in bands.            --Blackmore.
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   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]