I need to stop by the P. O. to pick up a package this afternoon.

After a stressful day, he locked his door and J/O to relax.

I almost failed o-chem until I joined a study group.

O chem is known for its complex reaction mechanisms and challenging exams.

I'm enrolled in O-Chem this semester to prepare for my research in organic synthesis.

I stayed up late last night studying because I have an O Chem midterm tomorrow.

The clinic offers the O-shot as a medical option for women experiencing decreased sexual satisfaction.

Don't hang out with that sick-o; he always gets into trouble.

Every autumn, our family celebrates O-Tsukimi with rice dumplings and lanterns.

During O-Week, freshmen toured the campus and joined clubs to make new friends.