Abbreviations beginning with o

OPEPOscillatory Positive Expiratory Pressure
Miscellaneous » Unclassified

OPEPAOrissa Primary Education Programme Authority (Orissa, India)
Academic & Science

OpEPAOrganizacion para la Educacion y Proteccion Ambiental (Spanish: Organization for Education and Environmental Protection; Colombia)
Miscellaneous

OPEPDOffice of Planning, Evaluation, and Policy Development (US Department of Education)
Governmental

OPEQOrdinateurs Pour les Ecoles du Quebec
Computing » IT

OPEROffice of Program Evaluation and Research (Ohio Department of Mental Health)
Governmental

OPEROperation
Governmental » NASA

OPEROperational
Governmental

OPEROperations, Operate, Operator
Governmental » NASA

OPEROpen Roadsters
Miscellaneous » Automotive

OPEROperator/Operations
Miscellaneous

OPEROrder Pay Earn Redeem
Miscellaneous » Unclassified

OPERAObservatoire Permanent de la Radioactivité dans l'Environnement (French: Permanent Observatory of Radioactivity in the Environment)
Academic & Science

OPERAOffice of Policy for Extramural Research Administration
Academic & Science » Research

OPeRAOn-Line Periodicals and Research Area (IEEE)
Academic & Science

OPERAOperational Programme for the Exchange of Weather Radar Information (EUMETNET)
Academic & Science

OPERAOrganised Programme of Experimentation and Research into ATM
Academic & Science

OPERAOscillation Project with Emulsion tRacking Apparatus
Academic & Science » Physics

OPERAOscillation Project with Emulsion-Tracking Apparatus (Geneva, Switzerland)
Academic & Science

OPERAOutpatient Endometrial Resection and Ablation (medical procedure)
Academic & Science

Abbreviations beginning with o

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