Main Entry:

lu·mi·nous

Pronunciation:

\ˈlü-mə-nəs\

Function:

adjective

Etymology:

Middle English, from Latin luminosus, from lumin-, lumen

Date:

15th century

1 a: emitting or reflecting usually steady, suffused, or glowing light b: of or relating to light or to luminous flux2: bathed in or exposed to steady light <luminous with sunlight>3: clear, enlightening4: shining, illustrious <a luminous film star> <a luminous performance>

synonyms see bright

— lu·mi·nous·ly adverb

— lu·mi·nous·ness noun