The Laurentian Mountains, a mountain range in Quebec, Canada.

plural of Laurentian

Relating to a Precambrian geological region in eastern Canada, or the period of its formation. / Relating to the Laurentian Mountains. / Pertaining to, or near, the Saint Lawrence River.

A resident of Saint Laurent. / A resident of the Saint Lawrence Valley. / A resident of the Laurentian Mountains.

An extinct Iroquoian language of Canada. / (geology) The Laurentian period.

Relating to Lorenzo de' Medici, or to the Laurentian Library in Florence named after him.