OP

1. Observation post (military) or point
2. Opposite prompt (theatre)
3. Ordinis or Ordo Praedicatorum (Latin), (of) the order of Preachers, ie Dominicans
4. Organophosphate

op¹ /op/ (informal)

A military or surgical operation

op² /op/

1. Operator
2. Opposite
3. Opus

op³ or o/p

Out of print

• chancellery
• chancellor
• chancellories
• chancellor of a cathedral
• chancellor of a diocese
• Chancellor of the Duchy of Lancaster
• Chancellor of the Exchequer
• chancellors
• chancellorship
• chancellorships
• chancellory
• chancels
• chance-medley
• chance-medleys
• chance of a lifetime
• chance on
• chance one's arm
• chance one's luck
• chancer
• Chanceries
• chancers
• Chancery
• Chancery Office
• chances
• chance upon