{ } prop. n. One of a widely spread family of Indians, including many distinct tribes, which formerly occupied most of the northern and eastern part of North America. The name was originally applied to a group of Indian tribes north of the River St. Lawrence. [ 1913 Webster ]

a. 1. Var. of Algonquian. [ Webster 1913 Suppl. ]

2. (Geol.) Pertaining to or designating a period or era recognized by the United States Geological Survey and some other authorities, between the Archæan and the Paleozoic, from both of which it is generally separated in the record by unconformities. Algonkian rocks are both sedimentary and igneous. Although fossils are rare, life certainly existed in this period. -- n. The Algonkian period or era, or system or group of systems. [ Webster 1913 Suppl. ]

a. 1. Var. of Algonquian. [ Webster 1913 Suppl. ]

2. (Geol.) Pertaining to or designating a period or era recognized by the United States Geological Survey and some other authorities, between the Archæan and the Paleozoic, from both of which it is generally separated in the record by unconformities. Algonkian rocks are both sedimentary and igneous. Although fossils are rare, life certainly existed in this period. -- n. The Algonkian period or era, or system or group of systems. [ Webster 1913 Suppl. ]