half light's Usage Examples:

The 2D half light radius is 34 pc (110 ly).

The green-tinted Asenlix capsules (generic forms can be seen as half light green, half dark green capsules marked "IFA") are known as "greenies".

The galaxy has a radius of 124 light years, (half light radius 38 pc) meaning that it is too big to be a globular cluster.

half light green, half dark green capsules marked "IFA") are known as "greenies" among US baseball players, a slang term that in current use has expanded.

radius of 124 light years, (half light radius 38 pc) meaning that it is too big to be a globular cluster.

6 parsecs) from the Sun, give or take a half light-year.

Synonyms:

corona, counterglow, candle flame, glowing, lamplight, sunlight, firelight, friar's lantern, radiance, moonshine, sunshine, electromagnetic spectrum, gaslight, torchlight, actinic radiation, scintillation, daylight, ray, ignis fatuus, fluorescence, streamer, starlight, glow, incandescence, shaft of light, will-o'-the-wisp, shaft, beam of light, irradiation, half-light, sun, light beam, visible radiation, jack-o'-lantern, visible light, meteor, shooting star, moonlight, candlelight, Moon, twilight, luminescence, actinic ray, gegenschein, beam, ray of light,

Antonyms:

dead, inanimateness, dysphemism, euphemism, misconstruction,