Copy of `Dorland's Medical Dictionary`

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Dorland's Medical Dictionary Category: Health and Medicine > Medical Dictionary Date & country: 31/12/2010, USA Words: 39128

Mysoline
(mi´so-lēn) trademark for preparations of primidone, an anticonvulsant.

mysophilia
(mi″so-fil´e-ә) abnormal interest in dirt or filth, with a desire for contact with it that may encompass a paraphilia.

mysophobia
(mi″so-fo´be-ә) irrational fear of dirt and contamination.

myxadenitis
(miks″ad-ә-ni´tis) inflammation of a mucus-secreting gland.

myxasthenia
(miks″әs-the´ne-ә) deficient secretion of mucus.

myxedema
(miks″ә-de´mә) a condition resulting from advanced hypothyroidism, or deficiency of thyroxine; it is the adult form of the disease whose congenital form is known as cretinism. It may be caused by lack of iodine in the diet; by atrophy, surgical removal, or a disorder of the thyroid gland; by destruction of t...

myxedema coma
an often fatal complication of long-term hypothyroidism in which the patient is comatose with hypothermia, depression of respiration, bradycardia, and hypotension; usually seen in elderly patients during cold weather.

myxedematoid
(miks″ә-dem´ә-toid) resembling myxedema.

myxochondroma
(mik″so-kon-dro´mә) chondroma with stroma resembling primitive mesenchymal tissue.

myxocyte
(mik´so-sīt) one of the cells of mucous tissue.

myxofibroma
(mik″so-fi-bro´mә) a fibroma containing myxomatous tissue; called also fibromyxoma.

myxofibrosarcoma
(mik″so-fi″bro-sahr-ko´mә) fibrosarcoma with myxomatous areas.

myxoid
(mik´soid) mucoid (def. 1).

myxoid cyst
a nodular lesion usually overlying a distal interphalangeal finger joint in the dorsolateral or dorsomesial position, consisting of focal mucinous degeneration of the collagen of the dermis; not a true cyst, lacking an epithelial wall, it does not communicate with the underlying synovial space.

myxolipoma
(mik″so-lĭ-po´mә) lipoma with foci of myxomatous degeneration.

myxoma
(mik-so´mә) a tumor composed of primitive connective tissue cells and stroma resembling mesenchyma. adj., myxo´matous., adj.

myxomatosis
(mik″so-mә-to´sis) the development of multiple myxomas. myxomatous degeneration.

myxomatous degeneration
mucous degeneration.

myxopoiesis
(mik″so-poi-e´sis) the formation of mucus.

myxosarcoma
(mik″so-sahr-ko´mә) a sarcoma containing myxomatous tissue.

myxovirus
(mik´so-vi″rәs) any of numerous RNA viruses, some of which cause disease; they are now distinguished as either orthomyxoviruses or paramyxoviruses.

NA
Nomina Anatomica.

Na
sodium (L. na´trium).

Na+-K+ pump
sodium-potassium pump.

nabothian cysts
nabothian follicles.

nabothian follicles
cystlike formations that occur when mucus-producing glands in the columnar epithelium of the uterine cervix become covered over by squamous epithelium resulting from metaplasia; they are usually found in the transition zone of the cervix. Called also nabothian cysts.

nabumetone
(nә-bu´mә-tōn″) a nonsteroidal antiinflammatory drug used in treatment of rheumatoid arthritis and osteoarthritis.

nacreous
(na´kre-әs) having a pearl-like luster.

NAD
nicotinamide adenine dinucleotide.

nadolol
(na-do´lol) a beta-adrenergic blocking agent that affects both β1- and β2-receptors; administered orally as an antihypertensive agent and for treatment of angina pectoris.

NADP
nicotinamide adenine dinucleotide phosphate.

Naegeli leukemia
acute myelomonocytic leukemia.

Naegeli syndrome
(na´gĕ-le) former name for Franceschetti-Jadassohn syndrome.

nafarelin
(naf´ә-rel″in) a synthetic preparation of gonadotropin-releasing hormone, used as the acetate ester in treatment of central precocious puberty and endometriosis; administered by nasal spray.

nafcillin
(naf-sil´in) a semisynthetic, acid- and penicillinase-resistant penicillin antibiotic effective against staphylococcal infections; administered orally or parenterally as the sodium salt.

Naffziger operation
excision of the superior and lateral walls of the orbit for exophthalmos.

Naffziger syndrome
(naf´zig-әr) scalenus syndrome.

Naffziger test
(for nerve root compression) increase or aggravation of pain or sensory disturbance over the distribution of the involved nerve root upon manual compression of the jugular veins bilaterally confirms the presence of an extruded intervertebral disk or other mass.

naftifine
(naf´tĭ-fēn) a broad-spectrum antifungal agent, applied topically as the hydrochloride salt.

Nagel test
(for color vision) one half of the field of an anomaloscope is illuminated with standard yellow and the subject must mix red and green until the second half matches the first.

Nageotte cells
cells of the cerebrospinal fluid that become greatly increased in number in disease.

nail
(nāl) a rod of metal, bone, or other material used for fixation of the ends of fractured bones. a hardened or horny cutaneous plate overlying the dorsal surface of the distal end of a finger or toe. The nails are part of the outer layer of the skin and are composed of hard tissue formed of keratin. Ca...

nail bed
the area of modified epidermis beneath the nail over which the nail plate slides as it grows.

nail fold
nail wall.

nail-patella syndrome
a hereditary syndrome consisting of dystrophy of the nails, absence or hypoplasia of the patella, hypoplasia of the lateral side of the elbow joint, and bilateral iliac horns. Called also hereditary osteo-onychodysplasia.

Nairovirus
(ni´ro-vi″rәs) a genus of viruses of the family Bunyaviridae, including Crimean-Congo hemorrhagic fever virus.

naïve
(nah-ēv´) not previously exposed to therapy or treatment.

naive cell
a lymphocyte that has not yet undergone activation.

naked virus
a virus lacking an outer lipoprotein bilayer; called also nonenveloped virus.

Nakiwogo virus
Semunya virus.

nalbuphine
(nal-bu´fēn) a potent opioid analgesic used as the hydrochloride salt for relief of moderate to severe pain and as an adjunct to anesthesia; administered intravenously, intramuscularly, and subcutaneously.

Nalfon
(nal´fon) trademark for a preparation of fenoprofen calcium, a nonsteroidal antiinflammatory drug.

nalidixic acid
(nal″ĭ-dik´sik) a quinolone antibacterial agent, active against most gram-negative bacteria causing urinary tract infection including Escherichia coli, Klebsiella and Enterobacter species, and some Proteus species. Pseudomonas species are generally resistant.

nalmefene
(nal´mә-fēn″) an opioid antagonist, used as the hydrochloride salt in the treatment of opioid overdose and postoperative opioid depression.

nalorphine
(nal´or-fēn) a semisynthetic congener of morphine, used as an antagonist to morphine and related narcotics and in the diagnosis of narcotic addiction.

naloxone
(nal-oks´ōn) an opioid antagonist structurally related to oxymorphone, used in the diagnosis and treatment of opioid toxicity, to reverse opioid-induced respiratory depression, and as an adjunct in the treatment of hypotension associated with septic shock; administered parenterally.

naltrexone
(nal-trek´sōn) an opioid antagonist used as the hydrochloride salt in treatment of opioid or alcohol abuse.

name
(nām) a word or words used to designate a unique entity and distinguish it from others.

NAME syndrome
a syndrome of familial myxomas with cutaneous, cardiac, and endocrine involvement, manifested as nevi, atrial myxoma, and neurofibroma ephelides. Cf. LAMB syndrome.

NAMI
National Alliance for the Mentally Ill.

nandrolone
(nan´dro-lōn) an anabolic steroid with lesser androgenic effects; used as n. decanoate and n. phenpropionate in the treatment of severe growth retardation in children and of metastatic breast cancer and as an aid in the treatment of chronic wasting diseases and anemia associated with renal insufficiency.

nanism
(na´niz-әm) dwarfism.

nanocephaly
(nan″o-sef´ә-le) microcephaly.

nanocormia
(nan″o-kor´me-ә) abnormal smallness of the body or trunk.

nanocurie
(nCi) (nan″o-ku´re) a unit of radioactivity, being one billionth (10−9) of a curie.

nanogram
(nan´o-gram) one billionth (10−9) of a gram.

nanoid
(nan´oid) dwarfish.

nanomelus
(nan-om´ә-lәs) micromelus.

nanometer
(nm) (nan´o-me″tәr) one billionth (10−9) of a meter.

nanophthalmia
(nan″of-thal´me-ә) nanophthalmos.

nanophthalmos
(nan″of-thal´mәs) abnormal smallness in all dimensions of one or both eyes in the absence of other ocular defects; see microphthalmos.

nanophthalmus
(nan″of-thal´mus) nanophthalmos. a person affected with nanophthalmos.

nanosecond
(ns) (nan´o-sek″ond) one billionth (10−9) of a second.

nanosomia
(nan″o-so´me-ә) dwarfism.

nanous
(nan´әs) dwarfish.

NANT
National Association of Nephrology Technicians/Technologists.

nanus
(nă´nәs) dwarf.

nape
(nāp) the back of the neck; called also nucha.

naphazoline
(naf-az´o-lēn) a sympathomimetic used in the form of the hydrochloride salt as a vasoconstrictor to decongest nasal and ocular mucosae.

naphthalene
(naf´thә-lēn) a hydrocarbon from coal tar oil, used as a moth repellent, fungicide, and preservative; it is toxic by ingestion, inhalation, and ingestion.

naphthol
(naf´thol) a phenol occurring in coal tar in two forms: α- or 1-naphthol and β- or 2-naphthol. It is used in dyes, insecticides, and pharmaceutical compounds. If excessive amounts are ingested, poisoning may result, characterized by anemia, jaundice, convulsions, and coma.

naphthol poisoning
the toxic condition brought on by the ingestion or absorption through the skin of naphthol, characterized by anemia, jaundice, convulsions, and coma. Called also naphtholism.

Naprosyn
(nap´rәsin) trademark for preparations of naproxen, a nonsteroidal antiinflammatory drug.

naproxen
(nә-prok´sәn) a nonsteroidal antiinflammatory drug that is a propionic acid derivative with analgesic, antipyretic, and antiinflammatory activity; used for treatment of rheumatoid arthritis, osteoarthritis, gout, calcium pyrophosphate deposition disease, fever, and dysmenorrhea, and in the prophylaxis and suppress...

napsylate
(nap´sә-lāt) USAN contraction for 2-naphthalenesulfonate.

naratriptan
(nar″ә-trip´tan) a selective serotonin receptor agonist used as the hydrochloride salt in the acute treatment of migraine; administered orally.

narcissism
(nahr´sĭ-siz-әm) dominant interest in oneself; self-love. adj., narcissis´tic., adj. primary narcissism that occurring in the early infantile phase of object relationship development, when the child has not differentiated him or herself from the outside world ...

narcissistic personality disorder
a personality disorder marked by a grandiose sense of self-importance. Patients are preoccupied with fantasies of unlimited success, power, brilliance, beauty, or ideal love. In spite of these fantasies, they are troubled by a sense of inadequacy and respond to criticism, defeat, or rejection either by indifference or by ...

narcoanalysis
(nahr″ko-ә-nal´ĭ-sis) a controversial method of psychotherapy that uses administration of medications to release suppressed or repressed thoughts or affect-laden and unacceptable ideas.

narcohypnosis
(nahr″ko-hip-no´sis) hypnotic suggestions made while the patient is narcotized.

narcolepsy
(nahr´ko-lep″se) recurrent, uncontrollable, brief episodes of sleep, often associated with hallucinations just beforehand or just afterward, or cataplexy or sleep paralysis. adj., narcolep´tic., adj.

narcosis
(nahr-ko´sis) a reversible state of central nervous system depression induced by a drug. basal narcosis narcosis with complete unconsciousness, amnesia, and analgesia. carbon dioxide narcosis respiratory acidosis. nitrogen narcosis ...

narcotic
(nahr-kot´ik) pertaining to or producing narcosis. an agent that produces insensibility or stupor, applied especially to the opioids (natural or synthetic drugs having actions like those of morphine). See also drug abuse.

narcotic blockade
inhibition of the euphoric effects of narcotic drugs by the use of other drugs, such as methadone, in the treatment of addiction.

narcotize
(nahr´ko-tīz) to put under the influence of a narcotic.

Nardil
(nahr´dil) trademark for a preparation of phenelzine sulfate, an antidepressant.

nares
(na´rēz) sing. na´ris the external openings of the nasal cavity; called also nostrils.

narrow angle tomography
zonography.

narrow-angle glaucoma
angle-closure glaucoma.

nasal
(na´zәl) pertaining to the nose. a speech sound produced by having air flow through the nose, such as n, ng, or m.