/ Dictionary / Index P PN: Meaning and Definition of Find definitions for: PN Pronunciation: [key] please note. promissory note. psychoneurotic. pn Pronunciation: [key] please note. promissory note. P/N Pronunciation: [key] promissory note. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. pmt. -pnea Related Content Daily Word Quiz: opulent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language