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A unit of illumination, being the amount of illumination of a unit area of spherical surface, due to a light of unit intensity placed at the center of the sphere.

Luminous. [R.]

Any body that gives light, especially one of the heavenly bodies. " Radiant luminary." Skelton. Where the great luminary . . . Dispenses light from far. Milton.

To illuminate. [Obs.]

Illumination. [Obs.]

To illumine. [Obs.] Spenser.

The faculty or power of voluntarily producing light, as in the firefly and glowworm.

Shining with a light due to any of the various causes which produce luminescence.

Producing light; yielding light; transmitting light; as, the luminiferous ether.

The quality or state of being luminous; luminousness.

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.

A fat, ungainly, stupid person; an awkward bungler. [Law.]

A small mass of matter of irregular shape; an irregular or shapeless mass; as, a lump of coal; a lump of iron ore. " A lump of cheese." Piers Plowman. " This lump of clay." Shak.

The European eelpout; -- called also lumpen.

A large, thick, clumsy, marine fish (Cyclopterus lumpus) of Europe and America. The color is usually translucent sea green, sometimes purplish. It has a dorsal row of spiny tubercles, and three rows on each side, but has no scales. The ventral fins unite and form a ventral sucker for adhesion to stones and seaweeds. Ca…

Bulky; heavy. Arbuthnot.

Like a lump; inert; gross; heavy; dull; spiritless. " Lumpish, heavy, melancholy." Shak. -- Lump"ish*ly, adv. -- Lump"ish*ness, n.

The lumprish.

Full of lumps, or small compact masses.

Actinomycosis. [Colloq.]