Abbreviations and Acronyms

O & A is an abbreviation of observation and assessment

O is an abbreviation of opening

O is an abbreviation of oxygen

O is an abbreviation of pint

O. albigularis is an abbreviation of Oryzomys albigularis

O. andersonii is an abbreviation of Oreochromis andersonii

O. anthropi is an abbreviation of Ochrobactrum anthropi

O. aries is an abbreviation of Ovis aries

O. atricapillus is an abbreviation of Otus atricapillus

O. bacoti is an abbreviation of Ornithonyssus bacoti

O. basilaris is an abbreviation of Opuntia basilaris

O. beaveri is an abbreviation of Onchocerca beaveri

O. beisa is an abbreviation of Oryx beisa

O. bezoarticus is an abbreviation of Ozotocerus bezoarticus

O. bifurcum is an abbreviation of Oesophagostomum bifurcum

O. brumpti is an abbreviation of Oesophagostomum brumpti

O. circumcincta is an abbreviation of Ostertagia circumcincta

O. corymbosa is an abbreviation of Orobanche corymbosa

O. dentatum is an abbreviation of Oesophagostomum dentatum

O. elongata is an abbreviation of Ommatokoita elongata

O. ficus indica is an abbreviation of Opuntia ficus indica

O. fracticornis is an abbreviation of Onthophagus fracticornis

O. g. beisa is an abbreviation of Oryx gazella beisa

O. h. columbianus is an abbreviation of Odocoileus hemionus columbianus

O. hemionus is an abbreviation of Odocoileus hemionus

O. intermedium is an abbreviation of Ochrobactrum intermedium

O. keta is an abbreviation of Oncorhynchus keta

O. leucoryx is an abbreviation of Oryx leucoryx

O. leucostictus is an abbreviation of Oreochromis leucostictus

O. leucostigma is an abbreviation of Orgyia leucostigma

O. manul is an abbreviation of Otocolobus manul

O. musimon is an abbreviation of Ovis musimon

O. mykiss is an abbreviation of Oncorhynchus mykiss

O. nasutus is an abbreviation of Ogcocephalus nasutus

O. noverca is an abbreviation of Opisthorchis noverca

O. palometa is an abbreviation of Oligoplites palometa

O. quercus is an abbreviation of Ophiostoma quercus

O. sericea is an abbreviation of Oxytropis sericea

O. talaje is an abbreviation of Ornithodoros talaje

O. tricuspis is an abbreviation of Ollulanus tricuspis

O. trigeminus is an abbreviation of Oxyrhopus trigeminus

O. turicata is an abbreviation of Ornithodoros turicata

o.h. is an acronym for omni hora

o.m. is an acronym for omni mane

o.n. is an acronym for omni nocte

O.R. is an acronym for operating room

O.R.E.F. is an acronym for Orthopedic Research & Education Foundation

O.R.S. is an acronym for Orthopedic Research Society

O.S.A. is an acronym for Optical Society of America

O.S.U.K. is an acronym for Ophthalmological Society of the United Kingdom

OA is an acronym for obstructive apnea

OA is an acronym for occipital artery

OA is an acronym for occiput anterior

OA is an acronym for octanoic acid

OA is an acronym for ocular albinism

OA is an acronym for old age

OA is an acronym for oleic acid

OA is an acronym for opiate analgesia

OA is an acronym for opsonic activity

OA is an acronym for optic atrophy

OA is an acronym for oral alimentation

OA is an acronym for orotic acid

OA is an acronym for osteoarthritis

OA is an acronym for ovalbumin

OA is an acronym for overall assessment

OA is an acronym for Overeaters Anonymous

OA is an acronym for oxalic acid

OAASN is an abbreviation of octamethyl-2,2,3,3,7,7,8,8-arsa-5-anilino-5-spiro-(4,4) -nonane

OABP is an acronym for organic anion binding protein

OACsA is an acronym for O-acetyl C(9) cyclosporin A

OADERase is an abbreviation of oligo A-dependent endoribonuclease

OAF is an acronym for osteoclast activating factor

OAGPC is an abbreviation of 1-O-octadecyl-2-azelaorylglycerophosphocholine

OAHAPSN is an acronym for octamethyl-2,2,3,3,7,7,8,8-arsa-5-(4-hydroxy) -3 -acetamidophenyl -5 -spiro-(4,4)-nonane

OAP is an acronym for Office of Adolescent Pregnancy

OAP is an acronym for old age pension

OAP is an acronym for old age pensioner

OAP is an acronym for Oncovin, ara-C and prednisone

OAP is an acronym for ophthalmic artery pressure

OAP is an acronym for osteoarthropathy

OAP is an acronym for oxygen at atmospheric pressure

OAT deficiency is an acronym for ornithine aminotransferase deficiency

OAT is an acronym for ornithine aminotransferase

oATP is an acronym for oligophosphoglycerol-adenosine triphosphate

oATP is an acronym for oligophosphoglyceroyl-adenosine triphosphate

OAV dysplasia is an acronym for oculoauriculovertebral dysplasia

OAV is an acronym for oculoauriculovertebral

OAV is an acronym for ovine adenovirus

OAVS is an acronym for oculo-auriculo-vertebral spectrum

OB is an abbreviation of obese

OB is an abbreviation of obstetric

OB is an abbreviation of obstetrician

OB is an abbreviation of obstetrics

OB is an acronym for objective benefit

OB is an acronym for obliterative bronchiolitis

OB is an acronym for occult bleeding

OB is an acronym for occult blood

OB is an acronym for olfactory bulb

OB is an acronym for oligoclonal band

OBAAV is an abbreviation of oxobis(acetylacetonato)vanadium IV

OBCAM is an acronym for opioid-binding cell adhesion molecule

OBDPO is an acronym for 2-octyl-4H-1,3,2-benzodioxaphosphorin-2-oxide

OBMPTMS is an acronym for 4-((2-oxo-3-bornylidene)methyl) -phenyltrimethylammonium methylsulfate

OBTS is an abbreviation of N-oxydiethylene-2-benzothiazole sulfenamide

OC is an acronym for obstetric complication

OC is an acronym for obstetrical conjugate

OC is an acronym for occlusocervical

OC is an acronym for office call

OC is an acronym for on call

OC is an acronym for only child

OC is an acronym for open cholecystectomy

OC is an acronym for optic chiasma

OC is an acronym for oral contraceptive

OC is an acronym for organ culture

OC is an acronym for organochlorine

OC is an acronym for original claim

OC is an acronym for osteocalcin

OC is an acronym for outer canthal

OC is an acronym for ovarian cancer

OC is an acronym for oxygen consumed

OCA is an acronym for octylcyanoacrylate

OCA is an acronym for oculocutaneous albinism

OCA is an acronym for olivopontocerebellar atrophy

OCA is an acronym for omeprazole, clarithromycin, amoxicillin

OCA is an acronym for oral contraceptive agent

OCa is an acronym for ovarian carcinoma

OCD is an acronym for obsessive compulsive disorder

OCD is an acronym for Office of Child Development

OCD is an acronym for Office of Civil Defense

OCD is an acronym for osteochondritis dissecans

OCD is an acronym for ovarian cholesterol depletion

OCH is an acronym for oral contraceptive hormone

oCRH is an acronym for ovine corticotropin releasing hormone

OCS is an acronym for occipital condyle syndrome

OCS is an acronym for Ondine’s curse syndrome

OCS is an acronym for open canalicular system

OCS is an acronym for oral contraceptive steroid

OCS is an acronym for outpatient clinic substation

OCS is an acronym for oxygen carbon sulfide

OCT is an acronym for object classification test

OCT is an acronym for optimal cutting temperature

OCT is an acronym for oral contraceptive therapy

OCT is an acronym for ornithine carbamoyltransferase

OCT is an acronym for orthotopic cardiac transplantation

OCT is an acronym for oxytocin challenge test

Oct. is an abbreviation of October

octyl-POE is an abbreviation of octyl-polyoxyethylene

OD is an acronym for Doctor of Optometry

OD is an acronym for occipital dysplasia

OD is an acronym for occupational dermatitis

OD is an acronym for occupational disease

OD is an acronym for oculodynamic

OD is an acronym for oculus dexter

OD is an acronym for Ollier disease

OD is an acronym for on-duty

OD is an acronym for open drop

OD is an acronym for optical density

OD is an acronym for optimal dose

OD is an acronym for originally derived

OD is an acronym for out-of-date

OD is an acronym for outside diameter

OD is an acronym for overdosage

OD is an acronym for overdose

ODAP is an abbreviation of oxalyldiaminopropionic acid

ODC is an acronym for ornithine decarboxylase

ODC is an acronym for orotidylate decarboxylase

ODC is an acronym for oxygen dissociation curve

ODD dysplasia is an abbreviation of oculodentodigital dysplasia

ODFR is an acronym for oxygen-derived free radical

o-dihydroxybenzene is an abbreviation of ortho-dihydroxybenzene

o-diphenol is an abbreviation of ortho-diphenol

ODMP is an acronym for O-desmethylmethoxyphenamine

ODNP is an acronym for octadecaneuropeptide

ODOD is an acronym for oculo-dento-osseous dysplasia

OE is an acronym for estradiol

OE is an acronym for olfactory epithelium

OE is an acronym for on examination

OE is an acronym for orthopedic examination

OE is an acronym for otitis externa

OE is an acronym for outside end

Oe. is an abbreviation of Oenothera

OER is an acronym for oxygen extraction ratio

OETEDG is an abbreviation of O(6)-ethylthioethyldeoxyguanosine

OETX is an abbreviation of oenanthotoxin

OFD is an acronym for object-film distance

OFD is an acronym for occipital frontal diameter

OFD is an acronym for oral-facial-digital

OFD syndrome is an abbreviation of oral-facial-digital syndrome

OFRS is an acronym for oxygen-derived free radical scavenger

OG is an acronym for obstetrics and gynecology

OG is an acronym for occlusogingival

OG is an acronym for oligodendrocyte

OG is an acronym for optic ganglion

OG is an acronym for orange green

OG is an acronym for orange green

OG is an acronym for orogastric

OG is an acronym for orogastrically

OGTT is an abbreviation of oral glucose tolerance test

OH is an abbreviation of Ohio

OH is an acronym for hydroxide

OH is an acronym for hydroxycorticosteroid

OH is an acronym for hydroxyl group

OH is an acronym for hydroxyl radical

OH is an acronym for obstructive hypopnea

OH is an acronym for occipital horn

OH is an acronym for occupational health

OH is an acronym for occupational history

OH is an acronym for on hand

OH is an acronym for open heart

OH is an acronym for out of hospital

OH is an acronym for outpatient hospital

OHC is an acronym for outer hair cell

OHDA is an abbreviation of hydroxydopamine

OHP is an abbreviation of hydroxyprogesterone

OHTHBPS is an acronym for 4-hydroxymethyltetrahydrobenzopsoralen

OI is an acronym for opportunistic infection

OIC is an acronym for osteogenesis imperfecta congenita

OID is an acronym for optimal immunomodulating dose

OID is an acronym for optimal initial dilatation

OID is an acronym for Organism Identification Number

OID is an acronym for other inflammatory diseases

OID is an acronym for ovine interdigital dermatitis

OIPAAm is an acronym for oligo(N-isopropylacrylamide)

OISB is an acronym for ortho-iodo-sodium benzoate

Ol is an abbreviation of oleum

OLB is an acronym for open lung biopsy

OLP is an acronym for occipito-laeva posterior

OLP is an acronym for oral lichen planus

OLP is an acronym for osmotin-like protein

OLT is an acronym for left occipitotransverse

OLT is an acronym for orthotopic liver transplantation

OM is an abbreviation of occipitomental

OM is an abbreviation of oculomotor

OM is an acronym for occupational medicine

OM is an acronym for Osborne-Mendel rat

OM is an acronym for osteomalacia

OM is an acronym for osteomyelitis

OM is an acronym for osteopathic manipulation

OM is an acronym for otitis media

OM is an acronym for outer membrane

OM is an acronym for ovulation method

OMBTS is an abbreviation of octamethylene bis(methanethiosulfonate)

OME is an acronym for office of medical examiner

OME is an acronym for otitis media with effusions

OMeIN is an acronym for octahydro-7H-10-methylindolo(1,7-bc)(2,6)-naphthyridine

OMGGP is an abbreviation of 1-O-octadecyl-2-O-methylglycerol-3-glucopyranoside

OMgp is an abbreviation of oligodendrocyte-myelin glycoprotein

OMP is an acronym for olfactory marker protein

OMP is an acronym for ornithine monophosphate

OMP is an acronym for otitis media purulenta

omp is an acronym for outer membrane porin

OMP is an acronym for outer membrane protein

OMPA is an acronym for octamethyl pyrophosphoramide

ONC is an abbreviation of oncogene

ONC is an abbreviation of oncology

ONC is an acronym for Orthopaedic Nursing Certificate

ONC is an acronym for over-the-needle catheter

ONCB is an abbreviation of o-nitrochlorobenzene

ONPG is an abbreviation of ortho-nitrophenyl-beta-D-galactoside

OOIPB is an abbreviation of 2-oxo-3-(4-(1-oxo-2-isoindolinyl)phenyl)butanamide

op is an abbreviation of operation

op is an abbreviation of operator

Op is an abbreviation of ophthalmology

OP is an acronym for occipitoparietal

OP is an acronym for occiput posterior

OP is an acronym for octapeptide

OP is an acronym for olfactory peduncle

OP is an acronym for opening pressure

OP is an acronym for operative procedure

OP is an acronym for ophthalmology

OP is an acronym for opponens pollicis

OP is an acronym for organophosphorus

OP is an acronym for oropharynx

OP is an acronym for orthostatic proteinuria

OP is an acronym for osmotic pressure

OP is an acronym for osteoporosis

OP is an acronym for out-patient

OP is an acronym for ovine prolactin

OPBP is an acronym for oligopeptide-binding protein

OPC is an acronym for organophosphorus compound

OPC is an acronym for oropharyngeal candidiasis

OPCA is an acronym for olivopontocerebellar atrophy

OPD is an acronym for outpatient department

OPGAN is an abbreviation of 5-oxo-prolyl-glycyl-arginine-4-nitroanilide

OPG-ATP is an acronym for oligophosphoglyceroyl-adenosine triphosphate

OPG-ATP is an acronym for oligophosphoglyceroyl-ATP

OPMPTO is an abbreviation of oxytocin, penicillaminyl(1) -(4-methylphenylalanyl)(2) -threonyl(4) -ornithine(8)

OPNU is an acronym for N-(2-oxopropyl)-N-nitrosourea

oPRL is an acronym for ovine prolactin

OPRT is an acronym for orotate phosphoribosyltransferase

OPV is an acronym for live oral poliovirus vaccine

OR is an acronym for odds ratio

OR is an acronym for oestrogen reseptor

OR is an acronym for operating room

OR is an acronym for optic radiation

OR is an acronym for oral rehydration

OR is an acronym for orthopedic research

ORBC is an acronym for octadecyl Rhodamine B chloride

ORF is an acronym for open reading frame

org is an abbreviation of organic

Orn is an abbreviation of ornithine

ORN is an abbreviation of orthopedic nurse

ORN is an acronym for operating room nurse

ORP is an acronym for oxygen-regulated protein

ORT is an acronym for object relations technique

ORT is an acronym for oestrogen replacement therapy

ORT is an acronym for operating room technician

ORT is an acronym for oral rehydration therapy

OSA is an acronym for obstructive sleep apnea

OsFeCN is an abbreviation of osmium ferricyanide

OSHA is an acronym for Occupational Safety and Health Adminstration

OSPC is an abbreviation of 1-oleoyl-2-stearoylphosphatidylcholine

OSTE is an acronym for objective structured teaching evaluation

OT is an acronym for occupational therapist

OT is an acronym for occupational therapy

OT is an acronym for old term

OT is an acronym for old tuberculin

OTC is an abbreviation of ornithine transcarbamylase

OTC is an abbreviation of oval target cell

OTC is an abbreviation of over-the-counter

OTC is an abbreviation of oxytetracycline

OTMPMMS is an abbreviation of (1-oxyl-2,2,5,5-tetramethylpyrroline -3-methyl) methanethiosulfonate

oto. is an abbreviation of otolaryngology

oto. is an abbreviation of otology

oto. is an abbreviation of otorhinolaryngology

OU is an acronym for observation unit

ou is an acronym for oculi unitas

ou is an acronym for oculo utro

ou is an acronym for oculus uterque

OU is an acronym for Oppenheim-Urbach

OV is an abbreviation of ovalbumin

OV is an abbreviation of ovary

OV is an abbreviation of overventilation

OV is an abbreviation of ovulation

OV is an acronym for oculovestibular

OV is an acronym for office visit

OV is an acronym for osteoid volume

OV is an acronym for outflow volume

OVX is an abbreviation of ovariectomized

OXPL is an acronym for oxytocin, 1-penicillamyl-leucine(2)

OXY is an abbreviation of oxygen

OXYHBA is an abbreviation of oxyhemoglobin A

OXYHBS is an abbreviation of oxyhemoglobin S

OXZOP is an abbreviation of N-oxidezopiclone

oz is an abbreviation of ounce