o.p.

1. out of print.

1. Order of Preachers (Dominican).

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

1. observation post.

abbreviation for

1. out of print

abbreviation for

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