1832, in the meaning defined above
German Oligoklas, from olig- olig- + Greek klasis breaking, from klan to break — more at clast
Time Traveler for oligoclase
See more words from the same year
Cite this Entry
“Oligoclase.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/oligoclase. Accessed 17 Aug. 2022.
See Definitions and Examples »
Get Word of the Day daily email!
The Great British Vocabulary Quiz
Test your visual vocabulary with our 10-question challenge!
A daily challenge for crossword fanatics.
Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!
As illustrated by some very smart pups
Bikini, bourbon, and badminton were places first
Do you take pride in Pride?
Look up any year to find out
How to use a word that (literally) drives some pe...
We're intent on clearing it up
Editor Emily Brewster clarifies the difference.
"The public is a hot mess"
Can you tell a meerkat from a wombat?
Take the quiz
A vocab quiz with panache
Test your visual vocabulary with our 10-question ...
Can you outdo past winners of the National Spelli...