OP

OP

1. Opening.
2. (Internet) Original poster; the person who started a thread.

   I don't think your response really answers the OP's question.

3. (Internet) Original post.
4. (military) Observation post.
5. (publishing) Out of print.
6. (religious) Ordo Praedicatorum (Order of Preachers, the Dominicans, a religious order).
7. overproof
8. Overall Position.
9. (video games) Overpowered (adj).
   • 2012 August 29, “Re: 5.0.4 first blush”, in alt.games.warcraft, Usenet‎, message-ID <k1l1nq$emb$1@dont-email.me>:

     I know they are going to tweak stuff in the next few weeks with patches as they find one class is OP and another is sucking...

10. online pharmacy.
11. (organic chemistry) Organophosphate.
12. (theater) Opposite prompt; stage right,
13. (Internet, music) Overplayed.
14. opening credits
15. opening theme

• (overpowered): underpowered, nerfed
• (opening credits): ED
• (opening theme): ED

• ITT
• OOP

• http://www.answers.com/topic/op

OP

1. (films, television) opening theme, intro sequence

• ED

• P.O., P/O, PO, Po, p.o., po, po'

• Mandarin
  • (Standard Chinese)⁺
    • Pinyin: ōupì
    • Zhuyin: ㄡ ㄆㄧˋ
    • Gwoyeu Romatzyh: oupih
    • IPA ^(key): /ˀoʊ̯⁵⁵ pʰi⁵¹/

OP

1. (chiefly ACG) opening theme, intro sequence

• ED

OP

1. (surgery) Abbreviation of Operation.
2. (surgery) Abbreviation of Operationssaal.
3. (electronics) Abbreviation of Operationsverstärker.

Abbreviation of オープニング (ōpuningu).

OP (katakana オープニング, rōmaji ōpuningu)

1. (entertainment) opening theme, intro sequence

• ED (エンディング) (endingu)