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definitions

o.p.

  1. out of print.

O.P.

1
  1. Order of Preachers (Dominican).

Origin of O.P.

1
From the Latin word Ōrdō Praedicātōrum

O.P.

2
  1. observation post.
  2. British Theater. opposite prompt.
  3. out of print.
  4. overproof.

OP

or O.P.

  1. observation post.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for o.p.

o.p.

O.P.

abbreviation for
  1. out of print

OP

abbreviation for
  1. military observation post
  2. Ordo Praedicatorum (the Dominicans)
  3. organophosphate

Word Origin for OP

(for sense 2) Latin: Order of Preachers
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012