\Prol`e*gom"e*non\, n.; pl. {Prolegomena}. [ NL.,
fr. Gr. ?, properly neut. pass. p. pr. of ? to say
beforehand; ? before + ? to say.]
A preliminary remark or observation; an introductory
discourse prefixed to a book or treatise. --D. Stokes (1659).
Sir W. Scott.