prefatory

Of, relating to, or constituting a preface; introductory. synonym: preliminary.

Belonging to a preface; serving as or resembling a preface; introductory.

Synonyms Introductory, preliminary, precursory, preparatory. See introduction.

Pertaining to, or of the nature of, a preface; introductory to a book, essay, or discourse.

introductory, preliminary, serving as a prelude or preface.

serving as an introduction or preface