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brown dwarf

(Encyclopedia)brown dwarf, in astronomy, celestial body that is larger than a planet but does not have sufficient mass to convert hydrogen into helium via nuclear fusion as stars do. Also called “failed stars,”...

white dwarf

(Encyclopedia)white dwarf, in astronomy, a type of star that is abnormally faint for its white-hot temperature (see mass-luminosity relation). Typically, a white dwarf star has the mass of the sun and the radius of...

dwarf star

(Encyclopedia)dwarf star: see white dwarf.

dwarf planet

(Encyclopedia)dwarf planet, a nonluminous body of rock or gas that orbits the sun and has a rounded shape due to its gravity. Unlike a planet, a dwarf planet is not capable of clearing its orbit of smaller objects ...

dwarf tree

(Encyclopedia)dwarf tree, in horticultural practice, a tree artificially kept to a smaller size than is normal for average members of the species. This is usually accomplished either by limiting its root space and ...

dwarf cornel

(Encyclopedia)dwarf cornel: see dogwood.

dwarf elk

(Encyclopedia)dwarf elk: see wapiti.

Brown University

(Encyclopedia)Brown University, Providence, R.I.; coeducational chartered 1764 as Rhode Island College at Warren, opened 1765. It moved to Providence in 1770 and was renamed for Nicholas Brown in 1804. Pembroke Col...

Brown, Gordon

(Encyclopedia)Brown, Gordon (James Gordon Brown), 1951–, British politician. From 1975 to 1980 he taught at Edinburgh Univ. and Glasgow College of Technology; he then joined Scottish Television (1980–83) as a j...

Brown, Moses

(Encyclopedia)Brown, Moses, 1738–1836, American manufacturer and philanthropist, b. Providence, R.I. He was associated with his brothers John, Joseph, and Nicholas in the family's mercantile activities before est...