transitive. To state or set forth, esp. in advance or by way of introduction; = premise, v. 1a.

transitive. To state, set forth, or mention before something else; to say or write by way of introduction to a subject or topic. Also with clause…

transitive. To write or say (something) as a preface; to state beforehand (frequently with clause as object). Now rare.

transitive. To make a preamble or preliminary to; to preface. Also figurative.

transitive. To write as a preface or introduction; (also) to preface a literary work with. rare.