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Aquarius

(Encyclopedia)Aquarius əkwârˈēəs [key] [Lat.,=water carrier], large constellation located on the ecliptic (the sun's apparent path through the heavens) between Capricornus and Pisces; it is one of the constell...

Frontinus

(Encyclopedia)Frontinus (Sextus Julius Frontinus) frŏntīˈnəs [key], fl. a.d. 74, Roman administrator and writer. As governor of Britain from a.d. 74 or a.d. 75 to a.d. 78, he reduced the Silures, a rebellious t...

fuller's earth

(Encyclopedia)fuller's earth, mineral substance characterized by the property of absorbing basic colors and removing them from oils. It is composed mainly of alumina, silica, iron oxides, lime, magnesia, and water,...

alkali

(Encyclopedia)alkali ălˈkəlī [key] [Arab., al-gili=ashes of saltwort], hydroxide of an alkali metal. Alkalies are readily soluble in water and form strongly basic solutions with a characteristic acrid taste. Th...

Provo, river, United States

(Encyclopedia)Provo, river, c.70 mi (110 km) long, rising in the Uinta Mts., NE Utah, and flowing SW past Provo to Utah Lake. It was early used for irrigation, but after Utah Lake was badly depleted in the 1930s, t...

Vaal

(Encyclopedia)Vaal fäl [key], river, c.750 mi (1,210 km) long, rising in Mpumalanga, NE South Africa, and flowing SW to the Orange River. It forms most of the northern border of the Free State. The river's flow is...

bowfin

(Encyclopedia)bowfin, primitive freshwater fish found in the Mississippi basin, the Great Lakes, and E to Vermont. The bowfin has a light covering of rounded, overlapping scales, a large mouth, and sharp teeth. Its...

Sudd

(Encyclopedia)Sudd so͝od [key], swampy region, c.200 mi (320 km) long, and c.150 mi (240 km) wide, central South Sudan, E central Africa. It is fed by the Bahr el Jebel, the Bahr el Ghazal, and the Bahr el Arab, h...

electric-light bug

(Encyclopedia)electric-light bug: see water bug. ...

iceberg

(Encyclopedia)iceberg, mass of ice that has become detached, or calved, from the edge of an ice sheet or glacier and is floating on the ocean. Because ice is slightly less dense than water about one ninth of the to...