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color blindness

(Encyclopedia)color blindness, visual defect resulting in the inability to distinguish colors. About 8% of men and 0.5% of women experience some difficulty in color perception. Color blindness is usually an inherit...

Menominee, city, United States

(Encyclopedia)Menominee mənŏmˈənē [key], city (1990 pop. 9,398), seat of Menominee co., N Mich., W Upper Peninsula, on Green Bay at the mouth of the Menominee River; inc. 1883. It is a distribution center for ...

Champion

(Encyclopedia)Champion, uninc. community in the town of Green Bay, Brown co., NE Wis., NE of the city of Green Bay. It is noted for the Shrine of Our Lady of Good Hel...

Marathas

(Encyclopedia)Marathas or Mahrattas both: mərătˈəz, məräˈtəz [key], Marathi-speaking people of W central India, known for their ability as warriors and their devotion to Hinduism. From their homeland in Mah...

Wyeth, Andrew Newell

(Encyclopedia)Wyeth, Andrew Newell wīˈəth [key], 1917–2009, American painter, b. Chadds Ford, Pa. Wyeth's work has been enormously popular, critically acclaimed, and sometimes severely criticized since his fir...

Caño Cristales

(Encyclopedia)Caño Cristales, river, c.62 mi (100 km) long, central Colombia, rising in Serranía de la Macarena National Park and flowing SE to the Guayabero River. Also known as the “River of Five Colors” or...

tourmaline

(Encyclopedia)tourmaline to͝orˈməlĭn, –lēn [key], complex borosilicate mineral with varying amounts of aluminum, iron, magnesium, sodium, lithium, potassium, and sometimes other elements, used as a gem. It o...

corundum

(Encyclopedia)corundum kərŭnˈdəm [key], mineral, aluminum oxide, Al2O3. The clear varieties are used as gems and the opaque as abrasive materials. Corundum occurs in crystals of the hexagonal system and in mass...

Fox, river, United States

(Encyclopedia)Fox, river, 176 mi (283 km) long, rising in S central Wis. and flowing SW to within 1.5 mi (2.4 km) of Portage, Wis., on the Wisconsin River, then NE through Lake Winnebago into Green Bay, an arm of L...

jade

(Encyclopedia)jade, common name for either of two minerals used as gems. The rarer variety of jade is jadeite, a sodium aluminum silicate, NaAl(SiO3)2, usually white or green in color; the green variety is the more...