from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The state or quality of being bright.
- n. The effect or sensation by means of which an observer is able to distinguish differences in luminance.
- n. The dimension of a color that represents its similarity to one of a series of achromatic colors ranging from very dim (dark) to very bright (dazzling).
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. the quality of being bright
- n. the perception elicited by the luminance of an object
- n. intelligence, cleverness
from the GNU version of the Collaborative International Dictionary of English
- n. The quality or state of being bright; splendor; luster; brilliancy; clearness.
- n. Acuteness (of the faculties); sharpness 9wit.
from The Century Dictionary and Cyclopedia
- n. The state or quality of being bright; splendor; luster; glitter: as, “the brightness of the sun,” Acts xxvi. 13.
- n. Acuteness of intellect or faculty; sharpness of wit.
- n. Cheer; cheerfulness.
- n. Synonyms Brilliancy, effulgence.—2. Acumen, mother-wit, ingenuity.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. intelligence as manifested in being quick and witty
- n. the quality of being luminous; emitting or reflecting light
- n. the location of a visual perception along a continuum from black to white
bright + -ness (Wiktionary)