op

¹ American  

[op] / ɒp /

noun

1. op art.

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OP ² American  

Or O.P.

1. observation post.

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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 ]

Etymology

Origin of O.P.

From Latin Ōrdō Praedicātōrum

Example Sentences

Ku said Trump would be eager to display his diplomatic prowess by securing a rare photo op with Kim.

From Barron's • Feb. 12, 2026

“It’s an op dude—I do this for a living—the pieces that are dropping are deeply researched. This is sophisticated op.”

From The Wall Street Journal • Feb. 6, 2026

The administration liked the visual and sent Noem there for a photo op and press briefings.

From Slate • Jan. 28, 2026

In video of the interaction, published Monday by TMZ, the musician poses with a supposed fan for a photo op.

From Los Angeles Times • Dec. 9, 2025

Clerk, Special Duties, clk/sd for short, like w/ op is for Wireless Operator and Y for wireless.

From "Code Name Verity" by Elizabeth Wein