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MedTerms Medical Dictionary A-Z List - N: Detailed Datasheet
Medically reviewed by Min Clinic Staff | Updated: January 2026
Na-NaNb-NeNf-NjNk-NoNp-NuNv-Nz
NNa-Na
- n-Hexane
- Na (sodium)
- Nadir
- Naegleria fowleri
- Naegleria infection
- Nail
- Nail Care
- Nail cross furrows
- Nail dysgenesis and hypodontia
- Nail furrows
- Nail grooves
- Nail infection, fungal
- Nail lines
- Nail-patella syndrome
- Nails, jogger's
- Nails, ringworm of the
- Nails, white spots on the
- Naloxone
- Naltrexone treatment program
- NAME syndrome
- Named reporting
- Naming diseases
- Nanism
- Nanny
- Nanny cam
- Nanny-cam
- Nannycam
- Napiform
- Naprelan
- Narcan
- Narcolepsy
- Narcotic
- Narcotic antagonist treatment
- Nares
- Naris
- NARP
- Nasal
- Nasal decongestant
- Nasal flu vaccine
- Nasal mucus
- Nasal passage
- Nasal polyp
- Nasal polyps
- Nasal prosthesis
- Nasal septum
- Nasal septum deviation
- Nasal septum hematoma
- Nasal septum perforation
- Nasal-spray flu vaccine
- NASH
- Naso-
- Nasoenteral tube
- Nasogastric
- Nasogastric tube
- Nasopharynx
- Nat'l Center for Complementary & Alternative Med.
- Nat'l Inst. of Child Health and Human Dev.(NICHD)
- Nat'l Institute of Allergy and Infectious Disease
- Nat'l Institute of Diabetes, Digestive and Kidney
- National Academies
- National Academy of Sciences
- National board exams
- National Cancer Institute (NCI)
- National Center for Research Resources (NCRR)
- National Cholesterol Education Program
- National Coalition for Cancer Survivorship
- National Eye Institute (NEI)
- National Formulary
- National Heart, Lung, and Blood Institute (NHLBI)
- National Human Genome Research Institute (NHGRI)
- National Institute Arthritis, Musculoskeletal
- National Institute for Occupational Safety
- National Institute of Dental and Craniofacial Res.
- National Institute of Environmental Health Science
- National Institute of General Medical Sciences
- National Institute of Mental Health (NIMH)
- National Institute of Neurological Disorders
- National Institute of Nursing Research
- National Institute on Aging (NIA)
- National Institute on Alcohol Abuse and Alcoholism
- National Institute on Deafness and Other Commun.
- National Institute on Drug Abuse (NIDA)
- National Institutes of Health (NIH)
- National Institutes of Health Clinical Center
- National Library of Medicine (NLM)
- National Program of Cancer Registries
- National Research Council
- Natriuresis
- Natriuretic
- Natriuretic peptide
- Natural family planning
- Natural immunity
- Natural killer cell
- Natural menopause
- Natural pacemaker
- Naturalistic study
- Nature (journal)
- Naturopath
- Naturopathic
- Naturopathic medicine
- Naturopathy
- Nausea
- Navel
NNb-Ne
- NBCCS
- NBIA
- NCCAM
- NCCS
- NCEP
- NCI (National Cancer Institute)
- NCRR
- NCS
- NCV
- ND
- Neanderthal
- Nearsightedness
- Nebulization, heated
- Nebulizer
- Neck
- Neck dissection
- Neck pain
- Neck, chronic stiff
- Neck, wry
- Necrobiosis
- Necrobiosis lipoidica
- Necrobiosis lipoidica diabeticorum
- Necropsy
- Necrosis
- Necrosis, coagulation
- Necrotic
- Necrotizing fasciitis
- Necrotizing gingivitis
- Necrotizing Pneumonia
- Needle biopsy, stereotactic
- Needle stick
- Needlestick injury
- Nef gene
- Negative calorie diet
- Negative clinical trial
- Negative, false
- Negative-strand RNA virus
- Neglect, child
- NEI
- Neisseria
- Neisseria infection
- NEJM
- Nematodes
- Neo- (prefix)
- Neocortex
- Neonatal
- Neonatal chloramphenicol toxicity
- Neonatal hyperbilirubinemia
- Neonatal intensive care unit
- Neonatal jaundice
- Neonatal lupus
- Neonatal mortality rate
- Neonatal sepsis
- Neonate
- Neonatologist
- Neonatology
- Neophobia
- Neoplasia
- Neoplasm
- Neoplastic
- NEP
- Nephrectomy
- Nephritis
- Nephritis, acute
- Nephritis, infective tubulointerstitial
- Nephritis, interstitial
- Nephritis, lipomatous
- Nephro-
- Nephroblastoma
- Nephroblastomatosis
- Nephrocalcinosis
- Nephrogenic rest
- Nephrolith
- Nephrolithiasis
- Nephrolithotripsy, percutaneous (PNL)
- Nephrologist
- Nephrology
- Nephron
- Nephronophthisis 1 (NPH1)
- Nephropathy
- Nephropathy, diabetic
- Nephropathy, membranous
- Nephroptosis
- Nephrosclerosis
- Nephrosis
- Nephrosis, lipoid
- Nephrotic syndrome, minimal change
- Nephrotomogram
- Nephrotoxic
- Neprilysin
- Nerve
- Nerve block
- Nerve cell
- Nerve compression
- Nerve conduction study
- Nerve conduction velocity test
- Nerve growth factor
- Nerve palsy, laryngeal
- Nerve pathways, visual
- Nerve, abducent
- Nerve, accessory
- Nerve, afferent
- Nerve, efferent
- Nerve, eighth cranial
- Nerve, eleventh cranial
- Nerve, facial
- Nerve, fifth cranial
- Nerve, first cranial
- Nerve, fourth cranial
- Nerve, glossopharyngeal
- Nerve, hypoglossal
- Nerve, ninth cranial
- Nerve, oculomotor
- Nerve, olfactory
- Nerve, optic
- Nerve, pinched
- Nerve, pressor
- Nerve, recurrent laryngeal
- Nerve, sciatic
- Nerve, second cranial
- Nerve, seventh cranial
- Nerve, sixth cranial
- Nerve, spinal
- Nerve, tenth cranial
- Nerve, third cranial
- Nerve, trigeminal
- Nerve, trochlear
- Nerve, twelfth cranial
- Nerve, vagus
- Nerve, vestibulocochlear
- Nerves, cranial
- Nervine
- Nervous colon syndrome
- Nervous system, autonomic
- Nervous system, central (CNS)
- Nervous system, human
- Nervous system, parasympathetic
- Nervous system, peripheral (PNS)
- Nervous system, sympathetic
- Nervus ulnaris
- Neti pot
- Neural
- Neural foramen
- Neural tube defect
- Neuralgia
- Neuralgia, ciliary
- Neuralgia, facial
- Neuralgia, migrainous
- Neuralgia, postherpetic
- Neuralgia, sphenopalatine
- Neuralgia, vidian
- Neuraminidase inhibitor
- Neurectomy
- Neurinoma, acoustic
- Neuritis
- Neuro-Ophthalmic Examination
- Neuro-Ophthalmic History
- Neurobiological disorder
- Neuroblastoma
- Neurocysticercosis
- Neurodegeneration with brain iron accumulation
- Neurodermatitis
- Neuroendocrine
- Neuroendocrine cancer of the skin
- Neuroendocrinology
- Neuroepithelial
- Neurofibromatosis
- Neurofibromatosis type 1
- Neurofibromatosis type 2
- Neurofibromatosis, bilateral acoustic
- Neurofibromatosis, central
- Neurogenesis
- Neurogenic
- Neurogenic shock
- Neuroleptic
- Neurological
- Neurological Disorders and Stroke, Nat'l Institut
- Neurologist
- Neurology
- Neuroma
- Neuroma, acoustic
- Neuroma, optic
- Neuromuscular
- Neuron
- Neuron, arcuate
- Neuron, sensory
- Neuron, spindle
- Neuron-specific enolase (NSE)
- Neurone
- Neuronitis, vestibular
- Neurooncologist
- Neuropathic pain
- Neuropathologist
- Neuropathy
- Neuropathy, accessory
- Neuropathy, Charcot-Marie-Tooth
- Neuropathy, diabetic
- Neuropathy, hypoglossal
- Neuroplasticity
- Neuropsychologist
- Neuroradiologist
- Neuroradiology
- Neuroscience
- Neuroscientist
- Neurosis
- Neurosis, hypochondriacal
- Neurosteroid
- Neurosurgeon
- Neurosyphilis
- Neurosyphilis, tabes
- Neurotheology
- Neurotoxic
- Neurotoxin
- Neurotransmitter
- Neutral foot type
- Neutral posture
- Neutropenia
- Neutropenia, severe congenital (SCN)
- Neutrophil
- Neutrophilia
- Nevi
- Nevoid basal cell carcinoma syndrome
- Nevus
- Nevus Comedonicus
- New Engl J Med
- New England Journal of Medicine
- New variant Creutzfeldt-Jakob disease
- New, fear of the
- Newborn hearing screen
- Newborn intensive care unit
- Newborn screening
- Newborn test, Brazelton
- Nexus
NNf-Nj
- NF
- NF1 (neurofibromatosis type 1)
- NF2 (neurofibromatosis type 2)
- NG
- NG tube
- NGF
- NGFB
- NHGRI
- NHLBI
- NIA (National Institute on Aging)
- NIAAA (Nat'l Inst. on Alcoh. Abuse and Alcoholism)
- Niacin
- Niacin deficiency
- NIAID (Nat'l Inst of Allergy and Infectious Dis.)
- NIAMS
- NICHD
- Nickel
- Nicotiana tabacum
- Nicotine
- Nicotinic acid
- Nictitate
- Nictitating spasm
- NICU
- NIDA
- NIDCD
- NIDCR (National Institute of Dental Research)
- NIDDK (Nat'l Institute of Diabetes and Kidney)
- Nidus
- NIEHS
- Niemann-Pick disease
- Niemann-Pick disease type A
- Niemann-Pick disease type C
- Night blindness
- Night sweats
- NIGMS
- NIH
- Nijmegen breakage syndrome
- Nil disease
- NIMH
- NINDS
- Nine-day measles
- NINR
- Ninth cranial nerve
- NIOSH
- Nipah virus
- Nipple
- Nipple absence
- Nipple confusion
- Nipple discharge
- Nipple shield
- Nipple, supernumerary
- Nirenberg
- Nirenberg , Marshall W.
- Nit
- Nitric oxide
- Nitrogen
- Nitrogen narcosis
- Nitrogen, liquid
- Nitrogenous base
- Nitrosoureas
- Nitrous oxide (laughing gas)
NNk-No
- NK cell
- NLD
- NLM (National Library of Medicine)
- NMR
- No show
- Nocardia infection
- Nocardiosis
- Nocebo
- Nocturia
- Nocturnal amblyopia
- Nocturnal enuresis
- Nodding syndrome
- Node
- Node, atrioventricular
- Node, AV
- Node, Heberden
- Node, SA
- Node, sentinel lymph
- Node, sinoatrial
- Node, sinus
- Nodes, Osler's
- Nodular
- Nodular hyperplasia of the prostate
- Nodular melanoma
- Nodule
- Nodule, Heberden
- Noisome
- Nolvadex (tamoxifen)
- Nomenclature
- Nomenclature of diseases
- Nominal aphasia
- Non-cystic fibrosis bronchiectasis
- Non-inferior clinical trial
- Non-inferiority clinical trial
- Non-insulin-dependent diabetes
- Non-Radiographic Axial Spondyloarthritis nr-axSpA
- Non-rapid eye movement sleep
- Non-small cell lung cancer
- Non-suicidal self injury (NSSI)
- Nonagenarian
- Nonalcoholic steatohepatitis
- Nonbacterial prostatitis
- Nonblinded study
- Noncoding DNA
- Noncompliance
- Nondipper
- Nondisjunction
- Nonepidermolytic palmoplantar keratoderma
- Nonlymphocytic leukemia, acute
- Nonmelanoma skin cancer
- Nonocular type Stickler syndrome
- Nonoxynol
- Nonpathogenic
- Nonpenetrant trait
- Nonrandom
- Nonseminoma
- Nonsense codon
- Nonsense mutation
- Nonstructural scoliosis
- Nonsyndromic
- Nonsyndromic deafness
- Nontuberculous mycobacterial lung disease
- Nook Barker
- Noonan syndrome (NS)
- Normal growth rate
- Normal pressure hydrocephalus
- Normal range
- Normal tension glaucoma
- Normotensive
- Normoxia
- Norovirus
- Norplant contraceptive
- North Asian tick-borne rickettsiosis
- North Carolina Macular Dystrophy (NCMD)
- Northern blot
- Norwalk virus
- Norwalk-like virus
- Norwegian scabies
- Nose
- Nose job
- Nose picking
- Nose, runny
- Nosebleed
- Nosebleed, causes of
- Nosebleed, treatment of
- Nosocomial
- Nosology
- Nostradamus
- Nostril
- Nostrum
- Notifiable disease
- Novel H1N1 influenza
- Novercal
NNp-Nu
- NP
- NPCR
- NPH
- NREM sleep
- NS
- NSAID
- NSE (neuron-specific enolase)
- NSSI
- NTD
- Nuchal
- Nuchal translucency test
- Nuclear family
- Nuclear medicine
- Nuclei
- Nuclei, basal
- Nucleic acid
- Nucleic acid hybridization
- Nucleic acids
- Nucleocapsid
- Nucleocaspid
- Nucleoside bypass therapy
- Nucleosome
- Nucleotide
- Nucleus
- Nucleus amygdalae
- Nucleus, arcuate
- Nucleus, caudate
- Nude mice
- Nude mouse
- Null mutation
- Nullipara
- Nulliparous
- Numb
- Numbness (Numb)
- Nummular eczema
- Nurse
- Nurse assistant
- Nurse practitioner
- Nurse, licensed practical
- Nurse, licensed vocational
- Nurse, registered
- Nurse-midwife
- Nurse-midwifery
- Nursemaid's elbow
- Nurses Health Study
- Nursing
- Nursing home
- NUT Carcinoma
- NUT Midline Carcinoma
- Nutcracker Syndrome
- Nutraceutical
- Nutrigenomics
- Nutrition
- Nutritional neuroscience
- Nutritionist
NNv-Nz