Laurentian UK /lɒˈɹɛnʃən/US /ləˈɹɛnʃən/adjective 5noun 3forms 1 adjective5 •Pertaining to, or near, the Saint Lawrence River.In the Laurentian hills. •Relating to the Laurentian Mountains. •Relating to a Precambrian geological region in eastern Canada, or the period of its formation. •Relating to Lorenzo de' Medici, or to the Laurentian Library in Florence named after him. •(nonstandard) Of or pertaining to Canada as a whole. noun3 •A resident of the Saint Lawrence Valley. •A resident of the Laurentian Mountains. •A resident of Saint Laurent. formsLaurentians
