Dreye權威釋義|luminosity

n.

發光，光明
光度
As a planet, the moon has a higher luminosity than most other planets.
作為一個星球，月亮的光度非常高。
發光體

同義參見:

以上來源於：《英漢大辭典》

n.

(pl. luminosities)

luminous quality.

▸Astronomy the intrinsic brightness of an object (as distinct from its apparent brightness).

以上來源於：《簡明牛津英語詞典》