- observation post.
- variant of ob- (by assimilation) before p: oppose.
- out of print.
- Order of Preachers (Dominican).
Origin of O.P.1
From the Latin word Ōrdō Praedicātōrum
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for op
More often that not, Davis seems to get dismissed as a provider of intriguing visual fun, pretty much in the mode of op art.Stripes With Depth
October 2, 2013
But the best examples of Op Art in the New Museum show called “Ghosts in the Machine” are genuinely disorienting.Existential Illusions
July 26, 2012
Prince Harry, a friendly creature of limited intelligence, was having an op to repair an umbilical hernia.Prince Harry The Pygmy Hippos Dies
May 10, 2012
"You 'op on top, an' I'll tell you where to git off," the 'bus conductor said, and John did as he was bid.The Foolish Lovers
St. John G. Ervine
For the history of this quarrel, and for other details of the award see Wallace, op.Shakespearean Playhouses
Joseph Quincy Adams
Backed by all the force of the Prime and Op fields and the full power of the engines.The Galaxy Primes
Edward Elmer Smith
For the effect of the West intellectually and spiritually, see Vambéry, op.The New World of Islam
Footnote 353: For the determination of these localities see Bunbury, op.The Discovery of America Vol. 1 (of 2)
- military observation post
- Ordo Praedicatorum (the Dominicans)
(for sense 2) Latin: Order of Preachers
- out of print
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
Word Origin and History for op
assimilated form of ob- before -p-.
Online Etymology Dictionary, © 2010 Douglas Harper