/ Dictionary / Index P Pentateuch: Meaning and Definition of Find definitions for: Pen•ta•teuch Pronunciation: (pen'tu-tk", -tyk"), [key] — n. the first five books of the Old Testament: Genesis, Exodus, Leviticus, Numbers, and Deuteronomy. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: pentateuch (Thesaurus) pentasyllable pentathlete Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language