from The American Heritage® Dictionary of the English Language, 5th Edition.

  • abbreviation observation post
  • abbreviation Roman Catholic Church Order of Preachers (Dominican)
  • abbreviation out of print

from The Century Dictionary.

  • An abbreviation of Opera; of opposite.
  • In music, an abbreviation of the Latin word opus, a work: used in citing a composer's works by their numbers.
  • An assimilated form of ob- before p.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • initialism Internet original poster
  • initialism Internet original post
  • initialism military observation post
  • initialism publishing out of print
  • initialism religious Order of Preachers, the Dominicans, a religious order
  • initialism overproof
  • initialism Overall Position
  • initialism video games overpowered (adj.)
  • initialism online pharmacy
  • initialism organic chemistry organophosphate


Sorry, no etymologies found.


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