Definition of phosphine oxide
: any of a series of oxides having the general formula R3PO that are obtained by oxidation of trisubstituted phosphines
Test Your Vocabulary
Odd Habits and Quirks
-
- Which of the following best describes an easily irritated person?

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 phosphine oxide