Na-NeNf-Nz
NNa-Ne
- Na (sodium)
- Nadir
- Nail care
- Nail furrows
- Naloxone
- Narcolepsy
- Narcotic
- Nasal
- Nasal passage
- Nasal polyps
- Naso-
- Nasogastric tube
- Nasopharynx
- National Formulary
- National Institutes of Health (NIH)
- Natriuresis
- Natriuretic
- Natural immunity
- Naturalistic study
- Naturopathy
- Nausea
- Navel
- NCS
- ND
- Nearsightedness
- Nebulizer
- Neck
- Neck pain
- Neck, chronic stiff
- Necropsy
- Necrosis
- Necrotizing Pneumonia
- Needlestick injury
- Negative calorie diet
- Negative-strand RNA virus
- Neo- (prefix)
- Neonatal
- Neonate
- Neoplasia
- Neoplasm
- Neoplastic
- NEP
- Nephritis
- Nephro-
- Nephrocalcinosis
- Nephrolithiasis
- Nephropathy
- Nephrosis
- Nephrotoxic
- Nerve
- Nerve, trigeminal
- Nervine
- Nervous colon syndrome
- Nervous system, peripheral (PNS)
- Neuralgia
- Neurobiological disorder
- Neurogenic
- Neurogenic shock
- Neuroleptic
- Neurological
- Neurology
- Neuromuscular
- Neuron-specific enolase (NSE)
- Neuropathic pain
- Neuropathy
- Neuroplasticity
- Neurosis
- Neurotransmitter
- Neutropenia
- Neutrophil
- Nexus
NNf-Nz
- NF
- NG
- Niacin
- Nicotine
- Nidus
- Night blindness
- Night sweats
- Nil disease
- Nipple
- Nipple discharge
- Nit
- Nitrogenous base
- Nitrosoureas
- NMR
- Nocardia infection
- Nocturia
- Node
- Nodule
- Nomenclature
- Non-rapid eye movement sleep
- Non-small cell lung cancer
- Nonagenarian
- Noncompliance
- Nonpathogenic
- Nonsyndromic
- Noonan syndrome (NS)
- Norketamine
- Normal range
- Normotensive
- Nose
- Nosebleed
- Nosocomial
- NREM sleep
- NS
- NSAID
- NTD
- Nuchal
- Nucleic acid hybridization
- Nucleoside bypass therapy
- Nucleus
- Null mutation
- Nullipara
- Numb
- Numbness (Numb)
- Nummular eczema
- Nurse assistant
- Nursing
- Nutrition
- Nystagmus