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Medical Dictionary Starting with N

N-Acetyl-Cysteine (NAC)A form of the animo acid cysteine that is available as a nut...About more
NaganaAn often fatal disease of African ungulates caused by variou...About more
Nairobi Sheep Disease (NSD)A noncontagious, tick-borne, viral infection of sheep and go...About more
NaiveNot previously exposed to therapy or treatment
NarcolepsyA disorder that causes excessive sleepiness during the day a...About more
NarcosisA drug (or other chemical)-induced drowsiness or stupor
NarcoticAn addictive substance that blunts the senses; can cause con...About more
Narcotic AnalgesicsA type of painkiller that blocks the transmission of pain si...About more
NarcoticsAn addictive drug, such as opium, that reduces pain, alters ...About more
NarcotismA state of unnatural sleep, induced by the effect of narcoti...About more
Nasal GleetThis is a chronic discharge from the nostrils of a horse of ...About more
Nasal SeptumSeparates left and right nasal airway Includes the perpendic...About more
Nasogastric TubeA thin, plastic tube that is inserted through the nose, down...About more
NasopharynxThe passageway connecting the back of the nose to the top of...About more
Natural CausesIn medicine, death by natural causes is a loosely-defined te...About more
Natural ChildbirthA technique of giving birth that stresses relaxation techniq...About more
Natural History StudyA study of the natural development of a disease over time
Natural Killer (NK) CellA type of white blood cell that attacks and kills tumor cell...About more
NaturopathyA system of natural healing based on the philosophy that the...About more
NauseaStomach distress characterized by an aversion to food and an...About more
NebulizerAn instrument that provides a drug in its misted form throug...About more
NecroinflammationTissue inflammation and death
NecrosisCell or tissue death
Needle AspirationThe use of a thin, hollow needle and syringe to remove body ...About more
Needle aspiration biopsyMedical test involving removal of cells or tissues with a ne...About more
Needle BiopsyThe use of a hollow, wide-diameter needle to remove a sample...About more
NelavanThe African sleep disease is fatal, characterized by morbid ...About more
NeonateA newborn, especially within the first days or weeks after b...About more
NeoplasmAn abnormal new mass of tissue that serves no purpose anothe...About more
NephrectomyThe surgical removal of one or both kidneys
NephriaNephritis; Inflammation of the Kidney, as Bright's disease
NephritisInflammation of the Kidney, as Bright's disease
NephroblastomaA fast-growing cancer of the kidneys that occurs most common...About more
NephrolithA calculus formed in the kidney; Kidney Stone

Explore Medical Terms from Medical Dictionary by A-Z Letter:

20000+ Medical & Health Terms for Doctors, students & patients from a medical dictionary. Our experts define difficult medical & health language in easy-to-understand explanations of each and every medical term.

Medical & Health Terms online medical dictionary provides quick & easy access to hard-to-spell and often misspelled medical & health definitions through an extensive alphabetical A- Z listing.

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