infolding
  內折
  In·fold v. t. [imp. & p. p. Infolded; p. pr. & vb. n. Infolding.]  [Written also enfold.]
  1. To wrap up or cover with folds; to envelop; to inwrap; to inclose; to involve.
     Gilded tombs do worms infold.   --Shak.
     Infold his limbs in bands.   --Blackmore.
  2. To clasp with the arms; to embrace.
  Noble Banquo, . . . let me infold thee,
  And hold thee to my heart.   --Shak.
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  infolding
       n : 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]