1. Overpowered (usually in a video game, in which a person or group becomes or is too powerful; has become very popular in the mmorpg crowd)
2. Original Poster (in forum-style collection of comment; the first person to comment or POST)
3. Operation (usually occurring in military gaming)
4. Operation 2 (second half of co-op or cooperation)
5. Opening. Usually refering to the opening song of an anime.
1. "Paladins have become way too overpowered!"
2. "Why is everyone getting so angry, the op was obviously kidding?!"
3. "In COD4 I always play spec-ops (special operations)it's the only way to roll."
4. "I love halo because it supports co-op!"
5. "I love Full Metal Alcamist's op!"
The best acid chemistry teacher. He will burn you if you don't know the acids.
OP is chemistry god.
Example: OP will kill me because i don't know the acids.
If OP catches you cheating in a test, you will get punished with 2 1s (F) marks and he will ask you something that you didn't ever do in class so you will get another 1 (F)...
OP is always waching (sometimes he gets to your house at 3 am and asks you the acids).
Abbreviation of "overpowered". An item or ability a video game that possesses extremely good statistics and is the superior choice among other similar options that do not perform as well. Usually shortened to "OP" in chatspeak or slang.
"Dude, the super shotgun in Doom is so OP in short-range attacks!"