LUMINOUSNESS

Pronunciation (US): (GB):

Meaning:

The quality of being luminous; emitting or reflecting light

Example:

its luminosity is measured relative to that of our sun

Synonyms:

Classified under:

Nouns denoting attributes of people and objects

Hypernyms ("luminousness" is a kind of...):

physical property (any property used to characterize matter and energy and their interactions)

Attribute:

bright (emitting or reflecting light readily or in large amounts)

dull (emitting or reflecting very little light)

Hyponyms (each of the following is a kind of "luminousness"):

illuminance; illumination (the luminous flux incident on a unit area)

incandescence (light from heat)

glow; luminescence (light from nonthermal sources)

Derivation:

bright (made smooth and bright by or as if by rubbing; reflecting a sheen or glow)