verb
definition
To introduce or make a comment before (the main point).
example
Let me preface this by saying that I don't know him that well.
definition
To give a preface to.
example
to preface a book
Examples of prefacing in a Sentence
The fifteen condemnatory clauses, prefacing the sentence at Geneva, set forth in detail that he was guilty of heresies, blasphemously expressed, against the foundation of the Christian religion.
Prefacing his action by a violent tirade against the royalist conspirators of Clichy, he sent to Paris General Augereau, well known for his brusque behaviour and demagogic Jacobinism.
If you want to publicly post an update on someone else's home page, you can do so by prefacing the message with the "@" symbol.
He has applied the theory with especial ingenuity to the interpretation of the circular bony plates in the carapace of the aberrant leather-back sea-turtles (Sphargidae) by prefacing an initial land phase, in which the typical armature of land tortoises was acquired, a first marine or pelagic phase, in which this armature was lost, a third littoral or seashore phase, in which a new polygonal armature was acquired, and a fourth resumed or secondary marine phase, in which this polygonal armature began to degenerate.