Definition of optical glass
: flint or crown glass of well-defined characteristics used especially for making lenses
Test Your Vocabulary
Challenging Words You Should Know
-
- Often used to describe “the march of time,” what does inexorable mean?

Test your knowledge - and maybe learn something along the way.
TAKE THE QUIZ
A daily challenge for crossword fanatics.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Share optical glass
Time Traveler for optical glass
The first known use of optical glass was in 1797
See more words from the same year