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Dictionary of Medical Acronyms & Abbreviations
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[ O ]
- OL open label(ed)
- ol left eye [Lat. oculus laevus]
- OLA left occipitoanterior [fetal position, Lat. occipito-laeva anterior]; oligonucleotide ligation assay
- OLAP online analytical processing
- OLAS oligoisoadenylate synthetase
- OLB olfactory bulb; open liver biopsy; open lung biopsy
- OLBx open lung biopsy
- OLC ouabain-like compound
- OLD obstructive lung disease; orthochromatic leukodystrophy
- OLDMEDLINE Old MEDLARS Online [NLM database of 1960-1965 citations]
- OLE object linking and embedding
- olf olfactory
- OLFR olfactory receptor
- OLH ovine lactogenic hormone
- oLH ovine luteinizing hormone
- OLI octree level index
- OLIDS open loop insulin delivery system
- OLIV Olifantsvlei virus
- OLMC online medical control
- OLP left occipitoposterior [fetal position, Lat. occipito-laeva posterior]
- OLR otology, laryngology, and rhinology
- ol res oleoresin
- OLRx orthotopic liver transplantation
- OLS ordinary least square; ouabain-like substance
- OLT left occipitotransverse [fetal position]; orthotopic liver transplantation
- OLVV Oliveros virus
- OM obtuse marginal [artery]; obtuse mental; occipitomental; occupational medicine; ocular movement; oculomotor; operations manager [database]; Osborne Mendel [rat]; osteomalacia; osteomyelitis; osteopathic manipulation; otitis media; outer membrane; ovulation method
- OMA object management architecture
- OMAC otitis media, acute catarrhal
- OMAS occupational maladjustment syndrome
- OMB obtuse marginal branch; Office of Management and Budget
- OMC office of managed care; orientation-memory-concentration [test]
- OMCH Office of Maternal and Child Health
- OMCT Orientation-Memory-Concentration Test
- OMD ocular muscle dystrophy; oculomandibulodyscephaly; orbital maxillary disjunction; organic mental disorder; oromandibular dystonia
- OMDB object microdatabase
- OME office of medical examiner; otitis media with effusions
- OMEGA Ottawa-Madison electron gamma algorithm
- Ω Greek capital letter omega; ohm
- ω Greek lowercase letter omega; angular velocity
- OMERACT Outcome Measures in Rheumatoid Arthritis Clinical Trial
- OMFAQ older Americans resources and services (OARS) multidimensional functional assessment questionnaire
- OMG object management group; oligodendrocyte-myelin glycoprotein; osteopathic medical school graduate
- OMGE Organisation Mondiale de Gastro-Enterologie
- OMGP oligodendrocyte-myelin glycoprotein
- OMH Office of Mental Health
- OMI office of medical investigator; old myocardial infarction
- OMIA Online Mendelian Inheritance in Animals [database]
- ο Greek letter omicron
- OMIM Online Mendelian Inheritance in Man [database]
- OML orbitomental line
- OMN oculomotor nerve
- OMNI Organizing Medical Networked Information [UK]
- OMOV Omo virus
- OMP olfactory marker protein; oligonucleoside methylphosphonate; ornithine monophosphate; orotidine-5´-monophosphatase; outer membrane protein
- OMPA octamethyl pyrophosphoramide; otitis media, purulent, acute
- OmpA, ompA outer membrane protein A
- OMPC, OMPCh otitis media, purulent, chronic
- OmpF, ompF outer membrane protein F
- OMR oligomycin-resistant; online medical record
- OMRT Ontario Association of Medical Radiation Technologists
- OMS occupational medical services; organic mental syndrome; otomandibular syndrome
- OM&S osteopathic medicine and surgery
- OMSA otitis media, suppurative, acute
- OMSC otitis media secretory (or suppurative) chronic
- OMT object modeling technique; ocular microtremor; O-methyltransferase; ophthalmic medical technician or technologist; osteopathic manipulative therapy
- OMV outer membrane vesicle
- OMVC open mitral valve commissurotomy
- ON occipitonuchal; office nurse; olfactory nucleus; onlay; optic nerve; orthopedic nurse; osteonecrosis; osteonectin; overnight
- ONAC Office of Noise Abatement and Control
- ONC oncogene; oncology; open network communication; Orthopaedic Nursing Certificate; over-the-needle catheter
- OND Ophthalmic Nursing Diploma; orbitonasal dislocation; other neurological disorders
- ONE [computer-assisted] otoneurological expert system
- ONG optic nerve glioma
- ONMRS onychotrichodysplasia-neutropenia-mental retardation syndrome
- ONNV o'nyong-nyong virus
- ONP operating nursing procedure; orthonitrophenyl
- ONPG o-nitrophenyl-beta-D-galactopyranoside
- ONS Oncology Nursing Society
- ONSA Organization for Nucleotide Sequencing and Analysis
- ONTG oral nitroglycerin
- ONTR orders not to resuscitate
- OO object-oriented; oophorectomy; orbicularis oculi [muscle]
- O&O on and off
- OOA object-oriented analysis; outer optic anlage
- OOB out of bed
- OODB object-oriented database
- OODBMS object-oriented database management system
- OOG optic oculography
- OOH out-of-hospital
- OOH/CA out-of-hospital cardiac arrest
- OOHRT object-oriented health care terminology respository
- OOLR ophthalmology, otology, laryngology, and rhinology
- OOM, oom oogonial metaphase
- OOMM object-oriented matrix model
- OOP object-oriented programming
- OOR out-of-room
- OORR orbicularis oculi reflex response
- OOSE object-oriented software engineering
- OOSS Outpatient Ophthalmic Surgery Society
- OOW out of wedlock
- OOWS objective opiate withdrawal scale
- OP occipitoparietal; occipitoposterior; occiput posterior; octapeptide; olfactory peduncle; opening pressure; operation, operative; operative procedure; ophthalmology; opponens pollicis; optic neuritis; organophosphate; oropharynx; orthostatic proteinuria; osmotic pressure; osteoporosis; outpatient; ovine prolactin
- O&P ova and parasites
- O/P outpatient
- Op ophthalmology; opisthocranion
- op operation; operator
- OPA oligonucleoside phosphoramidate; open procurement agency; optic atrophy; organ procurement agency; oropharyngeal airway; outcome and process assessment
- OPALS Ontario Prehospital Advanced Life Support [study]
- op-amp operational amplifier
- OPB outpatient basis
- OPC oculopalatocerebral [syndrome]; oligonucleotide purification cartridge; outpatient clinic; overall performance category
- OPCA olivopontocerebellar atrophy
- OPCAB off-pump coronary artery bypass
- OPCD olivopontocerebellar degeneration
- OPCOS oligomenorrheic polycystic ovary syndrome
- OPCRIT operational criteria
- OPCS Office of Population Censuses and Surveys [UK]
- OPD obstetric prediabetic; optical path difference; otopalatodigital [syndrome]; outpatient department; outpatient dispensary; o-phenylenediamine
- o-PDA o-phenylenediamine
- O´p-DDD mitotane
- OpDent operative dentistry
- OPDG ocular plethysmodynamography
- OPDS otopalatodigital syndrome
- OPF oligo[poly(ethylene glycol) fumarate]
- OPG ocular pneumoplethysmography; orthopantomogram; oxypolygelatin
- opg opening
- OPH obliterative pulmonary hypertension; ophthalmia; organic phosphate
- OPH, Oph ophthalmology; ophthalmoscopy, ophthalmoscope
- Oph A ophthalmic artery
- OPHC Office of Prepaid Health Care
- OphD Doctor of Ophthalmology
- OPHS Office of Public Health and Science
- Ophth ophthalmology
- OPI oculoparalytic illusion; Omnibus Personality Inventory
- OPIDN organophosphate-induced delayed neuropathy
- OPIDP organophosphate-induced delayed polyneuropathy
- OPIM other potentially infectious material
- OPK object processing kernal; optokinetic
- OPL other party liability; outer plexiform layer; ovine placental lactogen
- OPLINK Ohio Public Library Information Network
- OPLL ossification of posterior longitudinal ligament
- OPM occult primary malignancy; Office of Personnel Management; ophthalmoplegic migraine
- OPMD oculopharyngeal muscular dystrophy
- OPMSS Olestra Postmarketing Surveillance Study
- OPN ophthalmic nurse; osteopontin
- OPO Organ Procurement Organization
- OPP osmotic pressure of plasma; oxygen partial pressure
- opp opposite
- OPPA vincristine, procarbazine, prednisone, Adriamycin
- OPPG oculopneumoplethysmography
- OPRD opiate receptor delta
- OPRK opiate receptor kappa
- OPRR Office for Protection from Research Risks
- OPPS outpatient prospective payment system
- OPRT orotate phosphoribosyltransferase
- OPRTase orotate phosphoribosyltransferase
- OPS operations; optical position sensor; optimal parameter search [algorithm]; osteoporosis-pseudolipoma syndrome; outpatient service; outpatient surgery
- OPSA ovarian papillary serous adenocarcinoma
- OpScan optical scanning
- OPSEC operations security
- OPSI overwhelming postsplenectomy infection
- OPSR Office of Professional Standards Review
- OPT oligonucleoside phosphorothioate; o-phthaldialdehyde; optimization [method]; outpatient; outpatient treatment
- opt best [Lat. optimus]; optics, optician
- OPTHD optimal hemodialysis
- OPTICUS Optimization with Intracoronary Ultrasound to Reduce Stent Restenosis [trial]
- OPTIMAAL Optimal Trial in Myocardial Infarction with Angiotensin II Antagonist Losartan
- OPTIME Outcomes of a Prospective Trial of Intravenous Milrinone for Exacerbations [of chronic heart failure]
- OPTIME CHF Outcomes of a Prospective Trial of Intravenous Milrinone for Exacerbations of Chronic HeartFailure