look up any word, like sex:
 
1.
The second worst course in chemistry only to biochem. Full of lots of useless chemical reactions focusing on carbon containing compounds and making new carbon carbon bonds! Beware of gay professors that try to make retarded jokes to ease your pain!
Matt: That ochem exam was brutal
Tim: I know the class average was 67%
by Clyde George April 06, 2009
 
2.
A retarded abbreviation of organic chemistry. Trumped by the much more common "orgo" abbreviation.
Person 1: What're you taking next semester?
Person 2: OChem and some other shit.
Person 1: It's called orgo, bitch.
by bchonchon April 25, 2009