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Rigel

(Encyclopedia)Rigel rīˈjəl [key], bright star in the constellation Orion; Bayer designation Beta Orionis; 1992 position R.A. 5h14.2m, Dec. −8°13′. A huge, blue supergiant of spectral class B8 Ia, Rigel has ...

Rodgers, Jimmie

(Encyclopedia)Rodgers, Jimmie (James Charles Rodgers), 1897–1933, American singer, guitarist, and songwriter often called “the father of country music,” b. Meri...

collie

(Encyclopedia)collie, breed of large, agile working dog developed in Scotland during the 17th and 18th cent. It stands from 22 to 26 in. (55.9–66 cm) high at the shoulder and weighs from 50 to 75 lb (22.7–34 kg...

credit union

(Encyclopedia)credit union, cooperative, not-for-profit financial institution that makes low-interest personal loans to its members. It is usually composed of persons from the same occupational group or the same lo...

Fehling's solution

(Encyclopedia)Fehling's solution fāˈlĭngz [key], deep-blue, alkaline solution used to test for the presence of aldehydes (e.g., formaldehyde, HCHO) or other compounds that contain the aldehyde functional group, ...

triggerfish

(Encyclopedia)triggerfish, any of several species of tropical reef fishes with laterally compressed bodies, heavy scales, and tough skins. They are named for the mechanism of the three spines of the dorsal fin: whe...

aniline

(Encyclopedia)aniline ănˈəlĭn [key], C6H5NH2, colorless, oily, basic liquid organic compound; chemically, a primary aromatic amine whose molecule is formed by replacing one hydrogen atom of a benzene molecule w...

aconite

(Encyclopedia)aconite ăkˈənīt [key], monkshood, or wolfsbane, any of several species of the genus Aconitum of the family Ranunculaceae (buttercup family), hardy perennial plants of the north temperate zone, gro...

Vesuvius

(Encyclopedia)Vesuvius vəso͞oˈvēəs [key], Ital. Vesuvio, active volcano, S Italy, on the eastern shore of the Bay of Naples, SE of Naples. The only other active volcano on the European mainland is the Campi Fl...

Helena

(Encyclopedia)Helena. 1 City (2020 pop. 20,633), Jefferson and Shelby cos., central Ala.; inc. 1877. White settlers began to occupy the area after the War of ...