O → Oa-OcOd-OmOn-OqOr-OrOs-OsOt-OyOz-Oz

Oa-Oc

• OAE
• Oat cell cancer
• Oath of Maimonides
• OB
• OB/GYN
• Obese
• Obesity
• Obesity, endogenous
• Obesity, exogenous
• Obesity, gynecoid
• Obesity-related disease
• Objective
• OBS
• Observer variation
• Obsessive-compulsive disorder
• Obsessive-compulsive personality disorder
• Obstetrical forceps
• Obstetrician
• Obstetrician/gynecologist
• Obstetrics
• Obstruction
• Obstruction, airway
• Obstruction, intestinal
• Obstructive sleep apnea
• Obtund
• Obtunded
• Obverse
• Occam's razor
• Occipital
• Occipital bone
• Occipital hematoma
• Occiput
• Occlude
• Occlusion
• Occult
• Occult stool blood test
• Occupational disease
• Occupational medicine
• Occupational Safety and Health Administration
• Occupational Safety and Health, Nat'l Institut for
• Occupational therapist
• OCD
• Ocean itch
• OCG
• Ochronosis
• OCP
• OCPD
• Octogenarian
• Ocular
• Ocular conjunctiva
• Ocular histoplasmosis syndrome
• Ocular melanoma
• Ocular migraine
• Ocular prosthesis
• Oculo-auriculo-vertebral spectrum
• Oculoauriculovertebral dysplasia
• Oculocraniosomatic syndrome
• Oculocutaneous albinism
• Oculodentodigital dysplasia
• Oculomotor nerve
• Oculoplastics

Od-Om

• OD (lens prescription)
• ODD syndrome
• Odynophagia
• Oesophagus
• Off-label use
• Off-pump
• Off-pump CABG
• Off-pump surgery
• Office of Human Research Protections (OHRP)
• Offspring
• OGG1
• OHRP
• Oil, tropical
• Ointment
• Okihiro syndrome
• OKT3
• Olecranon
• Olefaction
• Olefactory
• Olfaction
• Olfactory
• Olfactory apparatus
• Olfactory bulb
• Olfactory disorder
• Olfactory nerve
• Olfactory system
• Oligo- (prefix)
• Oligoarthritis
• Oligoastrocytoma
• Oligodactyly
• Oligodendrocyte
• Oligodendroglioma
• Oligohydramnios
• Oligomenorrhea
• Oligonucleotide
• Oligonucleotide probe
• Oligopeptide
• Oligospermia
• Oliguria
• Oliva
• Olivae
• Olivary
• Olive
• Olive oil diet
• Oliver Wendell Holmes, Sr.
• Olivo-
• Olivopontocerebellar
• Olivopontocerebellar atrophy
• Ollier disease
• oma
• Omega-3 fatty acids
• Omentectomy
• Omentum
• Ommaya reservoir
• Omniscience
• Omphalo-
• Omphalocele
• Omphalos
• OMS
• OMS (World Health Organization)

On-Oq

• On call
• Onchocerciasis
• Oncogene
• Oncogene ErbB
• Oncologist
• Oncology
• Ondine's curse
• Oneiric
• Oneirophrenia
• Oneself, fear of
• Onset
• Onycho- (prefix)
• Onychocryptosis
• Onychodystrophy
• Onychogryphosis
• Onychogryposis
• Onycholysis
• Onychomycosis
• Onychomycosis, proximal white subungual
• Onychoosteodysplasia
• Oocyte
• Oogenesis
• Oogonium
• Oophorectomy
• Oophoritis
• OPCA
• Open charting
• Open cholecystectomy
• Open fracture
• Open heart surgery
• Open reading frame
• Open wound
• Open-angle glaucoma
• Open-label
• Open-label trial
• Opening, vaginal
• Operating room
• Operation
• Operation, Blalock-Taussig
• Operation, Glenn
• Operation, Macewen
• Operon
• Ophthalmia
• Ophthalmic
• Ophthalmic artery
• Ophthalmic migraine
• Ophthalmic veins
• Ophthalmitis
• Ophthalmologist
• Ophthalmology
• Ophthalmopathy
• Ophthalmoplegia with myopathy
• Ophthalmoplegia with ragged-red fibers
• Ophthalmoplegia-plus syndrome
• Ophthalmoscope
• Ophthalmoscopy
• Opiate
• Opiate agonist maintenance
• Opioid
• Opisthotonos
• Opium
• Opportunistic condition
• Opportunistic infection
• Opportunistic microorganism
• Optic
• Optic cup
• Optic disc
• Optic glioma
• Optic nerve
• Optic nerve head
• Optic nerve pathways
• Optic neuroma
• Optician
• Optometrist
• OPV

Or-Or

• OR (abbreviation)
• Oral
• Oral allergy syndrome
• Oral aversion
• Oral cancer
• Oral candidiasis
• Oral cholecystogram
• Oral contraceptive
• Oral contraceptive, combined
• Oral glucose tolerance test
• Oral moniliasis
• Oral rehydration salts
• Oral rehydration therapy
• Oral surgeon
• Oral-motor
• Orbit
• Orbital
• Orbital fracture
• Orbital ridge
• Orchiectomy
• Orchiopexy
• Orchitis
• Ordre des Medecins
• ORF
• Organ
• Organ failure
• Organ of hearing
• Organic
• Organic brain syndrome
• Organic dust toxic syndrome
• Organisation Mondiale de la Sante
• Organotherapy
• Organs of reproduction, female
• Organs of reproduction, male
• Orgasm
• Orgasmic disorder
• Orgasmic dysfunction
• Orgasmic inhibition
• Oriental lung fluke
• Oriental medicine (traditional)
• Orientation, anatomic terms of
• Orifice
• Ornithine
• Ornithine transcarbamylase (OTC) deficiency
• Ornithophobia
• Oromandibular dystonia
• Oropharynx
• Orphan disease
• Orphan drug
• ORS
• Ortho- (prefix)
• Orthodontic treatment (dental braces)
• Orthodontics
• Ortholog
• Orthologous gene
• Orthomolecular medicine
• Orthopaedics
• Orthopaedist
• Orthopedics
• Orthopedist
• Orthopnea
• Orthopod
• Orthopox
• Orthorexia nervosa
• Orthoscopic
• Orthosis, thoracolumbosacral (TLSO)
• Orthostatic hypotension
• Orthotic
• Oryzomys palustris

Os-Os

• Os
• OS (lens prescription)
• Os calcis
• Os sacrum
• OSA (obstructive sleep apnea)
• Oscillating vision
• Oscillopsia
• Oscitation
• Osgood-Schlatter disease
• OSHA
• Osler's nodes
• Osler, Sir William
• Osler-Rendu-Weber syndrome
• Osmolar
• Osmolarity
• Osmolarity, plasma
• Osmole
• Osseous
• Ossicle
• Ossification
• Ossify
• Osteitis
• Osteitis deformans
• Osteitis fibrosa cystica
• Osteo- (prefix)
• Osteoarthritis
• Osteoarthropathy
• Osteoblast
• Osteoblastoma
• Osteochondritis dissecans
• Osteochondroma
• Osteochondromatosis
• Osteochondromatosis, synovial
• Osteochondrosis
• Osteoclasia
• Osteoclasis
• Osteoclast
• Osteoclastoma
• Osteocyte
• Osteodystrophy
• Osteodystrophy, renal
• Osteogenesis
• Osteogenesis imperfecta
• Osteogenesis imperfecta congenita
• Osteogenesis imperfecta tarda
• Osteogenesis imperfecta type 1
• Osteogenesis imperfecta type 2
• Osteogenesis imperfecta with blue sclerae
• Osteogenesis, electrically stimulated
• Osteoid osteoma
• Osteology
• Osteolytic
• Osteolytic lesion
• Osteomalacia
• Osteomyelitis
• Osteonecrosis
• Osteopath
• Osteopathy
• Osteopenia
• Osteopetrosis
• Osteoporosis
• Osteosarcoma
• Osteosynthesis
• Osteotomy
• Osteotomy, block
• Osteotomy, cuneiform
• Osteotomy, displacement
• Ostomy
• Oswald Theodore Avery

Ot-Oy

• Ot-
• Otalgia
• OTC (over-the-counter)
• Othello psychosis
• Othello syndrome
• Otic barotrauma
• Otitis
• Otitis externa
• Otitis interna
• Otitis media
• Otitis media, acute
• Oto-
• Otoacoustic emission test
• Otolaryngologist
• Otolaryngology
• Otology
• Otopharyngeal tube
• Otoplasty
• Otosclerosis
• Otoscope
• Ounce
• Outer ear
• Outlet
• Outlet, gastric
• Outpatient
• Output, cardiac
• Ova
• Ovarian
• Ovarian cancer
• Ovarian cancer gene BRCA2
• Ovarian cancer test CA 125
• Ovarian cyst
• Ovarian pregnancy
• Ovarian remnant syndrome
• Ovarian teratoma
• Ovariectomy
• Ovary
• Ovary cyst, follicular
• Ovary, dermoid cyst of the
• Ovary, polycystic
• Over-the-counter (OTC) drug
• Overactive bladder
• Overbreathing
• Overgrowth
• Overgrowth syndrome
• Overload, iron
• Overweight
• Ovulation
• Ovulatory
• Ovum
• Oxter
• Oxy
• Oxycodone
• OxyContin
• Oxygen
• Oxygen mask
• Oxygen tent
• Oxygenate
• Oxygenating
• Oxygenation
• Oxyhemoglobin
• Oxymetholone
• Oxytocin
• Oxyuris

Oz-Oz

• oz.
• Ozone