O
off campus, on campus
- Hyphenate only when used as an adjective, not as an adverb. Off-campus housing is not easy to find. The lecture will take place on campus.
off-site, on-site
offstage, onstage
Olympics
- Capitalize all references to the international athletic contests: the Olympics, the Winter Olympics, the Olympic Games, an Olympic-size pool, but lowercase the games when used alone.
onward
- Not onwards. Also see afterward, backward, toward.
opening convocation
- Lowercase.
organizations, student
- Capitalize official names of student clubs. Do not italicize or put in quotation marks. See clubs.
Orient, Oriental
- Always capitalize when referring to the Middle East. Do not use in reference to the Far East nations of Asia and the nearby islands: The debate is Orientalism versus Westernism, oriental food, oriental rug.
orientation
- Do not capitalize when used generically or on second reference. Capitalize only when part of the official name of an event or program: International Student Orientation. The students attended the orientation.
over, more than
- When referring to something that can be counted, use more than: More than 100 people attended the event.
- Use over in other contexts, such as: She is over 50. John is over 2 meters tall.
overseas program
- Use study-abroad program instead.