OP
Appearance
OP, O.P., or Op may refer to any of the following:
- Observation post, a position from which soldiers can watch enemy movements
- Ocean Pacific, a retail company based in California, United States
- Orange pekoe, a term used in the Western tea trade to describe a particular grade of black teas
- Orange peel, the outer layer of an orange fruit
- Ordo Praedicatorum, commonly known as the Dominican Order, a Catholic religious order
- Operating Procedure, a standardised working protocol
- Operating Profit, a measure of business profitability
- Out of print, a status of a book title at a publishing house
- op, a slang term for marijuana grow operation
- op, Open pollination
- Mathematics
- Operator (mathematics), a mapping from one vector space or module to another
- Op (statistics), a symbol used in probability mathematics
- Octagonal prism, a prism formed by square sides and two regular octagon caps
- Culture
- Op art, also known as optical art, a style of visual art that makes use of optical illusions
- Op-ed, a newspaper opinion piece of a writer unaffiliated with the editorial board
- Opposite prompt, the right side of a theatre stage
- Op., an abbreviation for Opus number, used to denote one work of musical composition from many
- Op. cit., an abbreviation for the Latin term opus citatum est, meaning "the work has been cited"
- Optimus Prime (Transformers), a character from the Transformers franchise
- One Piece, a Japanese manga and anime created by Eiichiro Oda
- a shortening for Opening credits, more often used in anime by fans
- Internet and gaming
- Original poster or original post, a term used on online forums to denote the first poster/post
- Overpowered, a term used to note that a particular aspect or character in a game is unbalanced and thereby too strong.
- Overpriced, a term used mostly on online games to note about an item that is being marketed for a price higher than normal
- a channel operator on an Internet Relay Chat
- Education
- Oratory Preparatory School, a Catholic preparatory day school for boys in New Jersey, United States
- Overall Position, the grade appointed to Queensland high-school graduates
- Old Persean, an ex-pupil of The Perse School, Cambridge, England
- Old Pauline, an ex-pupil of St Paul's School, London
- Old Pangbournian, an ex pupil of Pangbourne College
- Geography
- Oak Park, Illinois, a village west of Chicago, United States
- Oakland Park, Florida, a city in the Fort Lauderdale Metropolian Area
- Orchard Park, New York, a town south of Buffalo, New York, United States
- Overland Park, Kansas, a city in the Kansas City Metropolitan Area
- Ohio Penitentiary, a now demolished prison formerly located in Columbus, Ohio
- Science and medicine
- the Oropharyngeal airway, leading from the mouth to the pharynx
- Organophosphate, the general name for esters of phosphoric acid
- Osteitis pubis, a medical condition which is prevalent among players of Australian rules football
- Osteoporosis, a degenerative disease of the bones that leads to an increased risk of fracture
- a short-hand slang term for a surgical operation