Pronunciation: (prō"li-gom'u-non", -nun), [key]
—pl. -naPronunciation: (-nu). [key]
1. a preliminary discussion; introductory essay, as prefatory matter in a book; a prologue.
2. Usually, prolegomena. (sometimes used with a sing. v.) a treatise serving as a preface or introduction to a book.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.