To save this word, you'll need to log in.
Definition of residual ray
: any of the infrared rays that remain in a beam of thermal radiation after a series of reflections from a crystal
Comments on residual ray
What made you want to look up residual ray? Please tell us where you read or heard it (including the quote, if possible).
Test Your Vocabulary
July 2020 Words of the Day Quiz
- Which is a synonym of mien?
Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
Test Your Knowledge - and learn some interesting things along the way.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridgedWords at Play
Ask the Editors
Word Games
Share residual ray