laurentian
Lau*ren"tian, a. Defn: Pertaining to, or near, the St. Lawrence River; as, the Laurentian hills. Laurentian period (Geol.), the lower of the two divisions of the Archæan age; -- called also the Laurentian.
Lau*ren"tian, a. Defn: Pertaining to, or near, the St. Lawrence River; as, the Laurentian hills. Laurentian period (Geol.), the lower of the two divisions of the Archæan age; -- called also the Laurentian.