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Having light; lighted; not dark or gloomy; bright. White walls make rooms more lightsome than black. Bacon.

A hydrous sulphate of lead and copper occurring in bright blue monoclinic crystals.

cquainted with literature; -- chiefly used in the plural. Now we are to consider that our bright ideal of a literatus may chance to be maimed. De Quincey.

Vivid; bright. " The live carnation." Thomson.

Bright; vivid; glowing; strong; vigorous. The colors of the prism are manifestly more full, intense, and lively that those of natural bodies. Sir I. Newton. His faith must be not only living, but lively too. South. Lively stones (Script.), saints, as being quickened by the Spirit, and active in holiness.…

Shining; bright; resplendent. " The sun's lucent orb." Milton.

Shining; bright; resplendent; as, the lucid orbs of heaven. Lucid, like a glowworm. Sir I. Newton. A court compact of lucid marbles. Tennyson.

A spot or fleck on the sun brighter than the surrounding surface.

Bright; shining in beauty. [Obs.] Most debonair and luculent lady. B. Jonson.

flux through one square meter of surface the illumination of which is uniform and of unit brightness.

Shining; emitting or reflecting light; brilliant; bright; as, the is a luminous body; a luminous color. Fire burneth wood, making it . . . luminous. Bacon. The mountains lift . . . their lofty and luminous heads. Longfellow.

Brilliancy; splendor; brightness; glitter. The right mark and very true luster of the diamond. Sir T. More. The scorching sun was mounted high, In all its luster, to the noonday sky. Addison.

The brightening of a metal in the crucible when it becomes pure, as in certain refining processes.

Bright; shining; luminous. " Good sparks and lustrous." Shak. -- Lus"trous*ly, adv.

A large silk-and-cotton kerchief, usually of bright colors, such as those often used by negroes for turbans.

apparent diameter. -- Magnitude of a star (Astron.), the rank of a star with respect to brightness. About twenty very bright stars are said to be of first magnitude, the stars of the sixth magnitude being just visible to the naked eye. Telescopic stars are classified down to the twelfth magnitude or lower. The scale…

); also, its fruit. The latter is large, covered with a thick, tough ring, and contains a bright yellow pulp of a pleasant taste and fragrant scent. It is often called mammee apple.

era of the family Pipridæ. They are mostly natives of Central and South America. some are bright-colored, and others have the wings and tail curiously ornamented. The name is sometimes applied to related birds of other families.

symbol of which was the same as that of the planet Mars. [Archaic] Chaucer. Mars brown, a bright, somewhat yellowish, brown.

) A perennial plant of the genus Caltha (C. palustris), growing in wet places and bearing bright yellow flowers. In the United States it is used as a pot herb under the name of cowslip. See Cowslip.