Post"script (?), n. [L. postscriptus, (assumed) p. p. of postscribere to write after; post after + scribere to write: cf. F. postscriptum. See Post-, and Scribe.]
A paragraph added to a letter after it is concluded and signed by the writer; an addition made to a book or composition after the main body of the work has been finished, containing something omitted, or something new occurring to the writer.
[Abbrev. P. S.
© Webster 1913.