Test your vocabulary with our 10-question quiz!
TAKE THE QUIZ“sesquioxide”
The following 2 entries include the term sesquioxide.
chromium sesquioxide
nounmanganese sesquioxide
noun: a compound Mn2O3 obtained as a black powder by heating manganese dioxide or manganous salts in air
Love words? Need even more definitions?
Merriam-Webster unabridged