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• op
  op

  noun

  op art.
• OP
  OP

  abbreviation

  observation post.
• op-
  op-

  variant of ob- (by assimilation) before p:
• op.
  op.

  abbreviation

  opera.
• Op.
  Op.

  abbreviation

  opus.
• o.p.
  o.p.

  abbreviation

  out of print.
• O.P.
  O.P.

  abbreviation

  Order of Preachers (Dominican).

op

¹ American  

[op] / ɒp /

noun

ops plural

1. op art.

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OP ² American  

Or O.P.

abbreviation

1. observation post.

2. Internet Slang. original poster.

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op- ³ American  

1. variant of ob- (by assimilation) before p:

   oppose.

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op. ⁴ American  

abbreviation

1. opera.

2. operation.

3. opposite.

4. opus.

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Op. ⁵ American  

abbreviation

1. opus.

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o.p. ⁶ American  

abbreviation

1. out of print.

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O.P. ⁷ American  

abbreviation

1. Order of Preachers (Dominican).

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O.P. ⁸ American  

abbreviation

1. observation post.

2. British Theater. opposite prompt.

3. out of print.

4. overproof.

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op. ¹ British  

abbreviation

1. operation

2. opus

3. operator

4. operational

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OP ² British  

abbreviation

1. military observation post

2. Ordo Praedicatorum (the Dominicans)

3. organophosphate

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o.p. ³ British  

abbreviation

1. out of print

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Usage

What else does OP mean? On internet forums and message boards, OP is short for original poster, or the person who started the thread that users comment on. In video gaming, anime, and sports, OP is a shorthand for overpowered, describing an indomitable character or player. Contet warning: This article features information about a homophobic slur that is highly offensive. How do you pronounce OP?[ oh-pee ]

Other Word Forms

Noun Inflected Forms

• ops
  plural

Etymology

Origin of O.P.

From Latin Ōrdō Praedicātōrum

Example Sentences

Her rise began in the 1950s during her collaboration with composer OP Nayyar, which marked a turning point in her career.

From BBC • Apr. 13, 2026

After receiving overwhelming support from Redditors, the OP decided to talk to the bride about how hurt she was by the request.

From Slate • Aug. 5, 2024

OP bank, which blocked Mr. Makaroff’s payments, said that “checks related to sanctions risk management may occasionally cause delays in payment transfers.”

From New York Times • Apr. 18, 2023

Another Canadian pension fund, OP Trust, told Reuters that it has investments in the digital asset fund space that is managed externally.

From Reuters • Dec. 7, 2022

OP Vernon’s corpuscule stopped in the middle of the street and stared directly at Sierra.

From "Shadowshaper" by Daniel José Older