Prefacing

from The Collaborative International Dictionary of English v.0.48

Preface \Pref"ace\, v. t. [imp. & p. p. {Prefaced}; p. pr. & vb.
   n. {Prefacing}.]
   To introduce by a preface; to give a preface to; as, to
   preface a book discourse.
   [1913 Webster]