postscript: Meaning and Definition of

post•script

1. a paragraph, phrase, etc., added to a letter that has already been concluded and signed by the writer.
2. any addition or supplement, as one appended by a writer to a book to supply further information.

Post•Script

1. a page description language using scalable fonts that can be printed on a variety of appropriately equipped devices, including laser printers and professional-quality imagesetters.