What does opp stand for?

Opposed (DAVI)

Opposite (WDMC)

Out of Print at Present - Publishing (WDMC)

Occiput Posterior Position (DAVI)

Octal Print Punch - Computer science

Office of Pesticide Programs - Environmental Protection Agency

Office of Pesticides Programs

Office of Plans and Policy (LAIN)

Office of Polar Programs - Later, Division of Polar Programs - National Science Foundation

Office of Policy and Planning - Office of Policy, Evaluation, and Research - Department of Labor

Office of Productivity Programs - Office of Personnel Management (GRD)

Office of Program Planning (AAGC)

Office of Public Programs - National Archives (BARN)

Office of Public Prosecutions - Northern Territory, Australia

Off-Load Preparation Party - Navy (ANA)

Off-Peak Power (SAUS)

Oncovin - Vincristine, Procarbazine, Prednisone - Antineoplastic drug regimen

Ontario Provincial Police - UTLAS symbol

Open Pore (SAUS)

Open-Pore Polyurethan - Plastic

Operator Preparation Program (IAA)

Opponent

Opportunity (ADA)

Opposed To

Opposing (GOBB)

Opposite (AAG)

Oppure - Otherwise - Music

Optical Precipitate Profiler (SAUS)

Optical Printer Projector (VLIE)

Oracle Partner Program

Order Processing Pipeline (AGLO)

Organizational Project Plan - Civil Defense

Organization and Personnel Plan - Army

- The Organization of Plastics Processors

Organ of People's Power (Cuba) - Political party (PSAP)

Organophosphorous Poisoning - Medicine (MELL)

Oriented Polypropylene - Plastics technology

Ortho-Phenylphenol - Disinfectant

Osmotic Pressure of Plasma - Medicine (EDAA)

Otago Press and Produce (SAUS)

Other People's Pages

Other People's Problems (CAL)

Other Physical Principles - Defense system

Other Programme Participation (SAUS)

Outer Planet Project

Out of Print at Present - Publishing

Oxidative Pentose Phosphate (PDAA)

Oxygen Partial Pressure