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Siouan

(Encyclopedia)Siouan so͞oˈən [key], branch of Native American languages belonging to the Hokan-Siouan linguistic family, or stock, of North and Central America (including Mexico). See Native American languages. ...

crossbill

(Encyclopedia)crossbill, bird of the genus Loxia, in the finch family. Its bill, crossed at the tips, is specialized for pulling apart pine cones and picking out the seeds. Crossbills are found in the evergreen for...

bee balm

(Encyclopedia)bee balm, name for several herbs, especially Melissa officinalis and Monarda didyma, both typical perennials of the family Labiatae (mint family) named for their fragrance, attractive to bees and humm...

Devonian period

(Encyclopedia)Devonian period dĭvōˈnēən [key], fourth period of the Paleozoic era of geologic time between 408 and 360 million years ago (see Geologic Timescale, tablegeologic timescale, table). It was named (...

morning glory

(Encyclopedia)CE5 Morning glory, Convolvulus arvensis morning glory, common name for members of the Convolvulaceae, a family of herbs, shrubs, and small trees (many of them climbing forms) inhabiting warm regio...

Mound Builders

(Encyclopedia)Mound Builders, in North American archaeology, name given to those people who built mounds in a large area from the Great Lakes to the Gulf of Mexico and from the Mississippi River to the Appalachian ...

bison

(Encyclopedia)bison, large hoofed mammal, genus Bison, of the cattle family. Bison have short horns and humped, heavily mantled shoulders that slope downward to the hindquarters. The European bison, or wisent, Biso...

alternating current

(Encyclopedia)alternating current, abbr. AC, a flow of electric charge that undergoes periodic reverses in direction. In North America ordinary household current alternates at a frequency of 60 times per second. Se...

Wakashan

(Encyclopedia)Wakashan wäkăshˈən, wôˈkəshänˌ, –shônˌ [key], branch of the Algonquian-Wakashan linguistic family, or stock, of North America and spoken by Native Americans of W Canada and the state of W...

Uto-Aztecan

(Encyclopedia)Uto-Aztecan yo͞oˈtō-ăztĕkˈən [key], branch of the Aztec-Tanoan linguistic stock. The languages belonging to this stock are spoken in North and Central America. See Native American languages. ...