Definition of self-luminous
: generating and emitting its own visible light … Venus … is not self-luminous but lit by the sun …— Derek J. deSolla Price Radium paint is actually self-luminous—when freshly applied, it requires no external energy source …— Jack Forster
Keep scrolling for more
Love words? Need even more definitions?Merriam-Webster unabridged
Words at Play
Ask the Editors
- Why is there a 'd' in 'fridge' but not in 'refrigerator'?
- 'All Intensive Purposes' or 'All Intents and Purposes'?
- Is Singular 'They' a Better Choice?
- Name that Thing: Dog Breeds Take the quiz
- Words You Should Know Quiz, Vol. 1 Take the quiz
- How Strong Is Your Vocabulary? Take the quiz
- Word Winder's CrossWinder Play the game