/ Dictionary / Index L Laurentian Mountains: Meaning and Definition of Find definitions for: Lauren'tian Moun'tains Pronunciation: [key] a range of low mountains in E Canada, between the St. Lawrence River and Hudson Bay. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Laurentian Laurentides Park Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language