English ⇄ English

OPR abbr.
abbr.	Office of Professional Responsibility; Office Procedures Reinforcement; Official Public Record; Office of Public Relations; opener; operate; operator; opioid pain reliever; operators
abbr., austral.	Operating Performance Regime
abbr., auto.	oil pressure; over pressure relief
abbr., avia.	overall pressure ratio (bonly); air operator; office of primary interest; operation; operated; optical preamplifier receiver; optional parts request
abbr., earth.sc.	oxygen production rate
abbr., el.	office printer; optical pulse reflectometer
abbr., med.	Old Parish Records
abbr., mil.	Office of Primary Responsibility; Officer Performance Report; Operator; Organization of Primary Responsibility
abbr., mil., air.def.	operative role
abbr., oil	orienting perforating service; oil production rate; onshore pipeline regulations; operational program requirement; outflow performance ratio; polypropylene oxide rubber
abbr., opt.	optical page reader; optical pattern recognition
abbr., railw.	Ontario Pacific Railway; Oregon Pacific Railroad Company; Ottawa & Prescott Railway
abbr., space	oxygen pressure regulator
energ.ind.	operating power range
meteorol.	operations
mil.	objectives, priority and rationale; office of primary responsibility; operational procedure; operational project requirements; operations planning review; operations procedure; ordnance property regulations; outpatient rate; outstanding performance rating
oil, abbr.	outflow performance relationship
tech.	offsite procurement request; open pool reactor; open-phase relay
opr. abbr.
abbr.	operating
Opr abbr.
abbr., busin.	operating