Related Content
- Daily Word Quiz: pentimento
- Analogy of the Day: Today’s Analogy
- Frequently Misspelled Words
- Frequently Mispronounced Words
- Easily Confused Words
- Writing & Language
OAO: Meaning and Definition of
OAO
Pronunciation: [key]
- Orbiting Astronomical Observatory: one of a series of scientific satellites that studied astronomical phenomena at ultraviolet and x-ray wavelengths.
Trending
Here are the facts and trivia that people are buzzing about.
