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

toxic headache
a type caused by systemic poisoning or certain illnesses.

toxic hearing loss
ototoxic hearing loss.

toxic hemolytic anemia
anemia due to a toxic agent such as a drug, bacterial lysin, or snake venom.

toxic hepatitis
hepatitis produced by a hepatotoxin such as Amanita phalloides toxin, carbon tetrachloride, or any of various drugs.

toxic inflammation
one due to a poison, such as a bacterial product.

toxic labyrinthitis
acute serous labyrinthitis.

toxic multinodular goiter
hyperthyroidism arising in a goiter containing numerous nodules, usually of long standing.

toxic neuritis
neuritis due to a poison.

toxic neuropathy
that due to ingestion of a toxin.

toxic oil syndrome
Spanish toxic oil syndrome.

toxic psychosis
that due to ingestion of toxic agents or to the presence of toxins within the body.

toxic shock syndrome
a severe illness caused by a bacterial infection, characterized by high fever of sudden onset, vomiting, diarrhea, and myalgia, followed by hypotension and, in severe cases, shock. A sunburnlike rash with peeling of the skin, especially of the palms and soles, occurs during the acute phase. It was originally observed almo...

toxicant
(tok´sĭ-kәnt) poisonous. poison. developmental toxicant teratogen.

toxicity
(tok-sis´ĭ-te) the quality of being poisonous, especially the degree of virulence of a toxic microbe or of a poison. developmental toxicity the extent to which a toxin crosses the placental barrier and produces adverse effects on a developing embryo or fetus; see also teratogenesis. ...

Toxicodendron
(tok″sĭ-ko-den´dron) Rhus.

toxicogenic
(tok″sĭ-ko-jen´ik) producing or elaborating poisons.

toxicoid
(tok´sĭ-koid) resembling a poison.

toxicologist
(tok″sĭ-kol´ә-jist) a specialist in toxicology. developmental toxicologist one who specializes in developmental toxicology; see also teratologist.

toxicology
(tok″sĭ-kol´ә-je) the science or study of poisons. adj., toxicolog´ic., adj. developmental toxicology the study of the effects of toxins on developing embryos; see also teratology.

toxicopathy
(tok″sĭ-kop´ә-the) toxicosis. adj., toxicopath´ic., adj.

toxicopexy
(tok´sĭ-ko-pek″se) the fixation or neutralization of a poison in the body. adj., toxicopec´tic, toxicopex´ic., adj.

toxicophidia
(tok″sĭ-ko-fid´e-ә) the venomous snakes; see also viper.

toxicophobia
(tok″sĭ-ko-fo´be-ә) irrational fear of being poisoned.

toxicosis
(tok″sĭ-ko´sis) any diseased condition due to poisoning.

toxidrome
(tok´sĭ-drōm) a specific syndromelike group of symptoms associated with exposure to a given poison.

toxiferous
(tok-sif´әr-әs) conveying or producing a poison.

toxigenic
(tok″sĭ-jen´ik) toxicogenic.

toxigenicity
(tok″sĭ-jә-nis´ĭ-te) the property of producing toxins.

toxigenicity test
(for toxigenic strains of Corynebacterium diphtheriae) a primary culture is streaked onto a plate of tellurite agar containing a strip of filter paper perfused with diphtheria antitoxin. The exotoxin produced by the bacteria forms a band of precipitation with antitoxin diffusing from the filter paper. Called also Elek tes...

toxin
(tok´sin) a poison, especially a protein or conjugated protein produced by certain animals, higher plants, and pathogenic bacteria. Usually only a few toxin-producing agents are introduced into the body, and it is not until there are enough of them to overwhelm the leukocytes and other types of antibodies that sym...

toxinology
(tok″sin-ol´ә-je) the science dealing with the toxins produced by certain higher plants and animals and by pathogenic bacteria.

Toxocara
(tok″so-kar´ә) a genus of nematode parasites found in the dog (T. ca´nis) and cat (T. ca´ti); both species are sometimes found in humans.

toxocariasis
(tok″so-kә-ri´ә-sis) infection by worms of the genus Toxocara, such as in ocular or visceral larva migrans.

toxoid
(tok´soid) a toxin treated by heat or chemical agent to destroy its deleterious properties without destroying its ability to combine with or stimulate the formation of antitoxin. diphtheria toxoid a sterile preparation of formaldehyde-treated products of the growth of Corynebacteriu...

toxophore
(tok´so-for) the group of atoms in a toxin molecule that produces the toxic effect. adj., toxoph´orous., adj.

Toxoplasma
(tok″so-plaz´mә) a genus of sporozoa that are parasites of humans, other mammals, and some birds; it includes one species, T. gon´dii, that can be transmitted from an infected mother to an infant in utero or at birth. See also toxoplasmosis.

toxoplasmin
(tok″so-plaz´min) an antigen prepared from mouse peritoneal fluids rich with Toxoplasma gondii; injected intracutaneously as a test for toxoplasmosis.

toxoplasmosis
(tok″so-plaz-mo´sis) a disease due to infestation with the sporozoonToxoplasma gondii. The congenital form may be asymptomatic or may produce encephalomyelitis with cerebral calcification, chorioretinitis and blindness, and even death. The acquired form is of two types: lymphadenopathic toxoplasmosis, closely resembling...

Toynbee test
(for patency of the auditory tube) the Toynbee maneuver is done, and pressure changes in the middle ear are monitored. Middle ear negative pressure or negative pressure followed by ambient pressure usually indicates normal function of the auditory tube.

TPA
t-PA t-plasminogen activator. total parenteral alimentation (see parenteral nutrition); t-plasminogen activator.

TPHA
Treponema pallidum hemagglutination assay.

TPI test
Treponema pallidum immobilization test.

TPN
total parenteral nutrition.

TPR
temperature, pulse, and respiration.

trabecula
(trә-bek´u-lә) a small beam or supporting structure; used in anatomic nomenclature to designate various fibromuscular bands or cords providing support in various organs, as heart, penis, and spleen, adj., trabec´ular., adj. trabeculae of bone anastomosing bony s...

trabecular adenoma
a follicular adenoma whose cells are closely packed to form cords or trabeculae, with only a few small follicles.

trabecular carcinoma of the skin
Merkel cell carcinoma.

trabecular veins
vessels running through the splenic trabeculae, formed by tributary pulp veins.

trabecular-tubular adenoma
the trabecular-tubular type of basal cell adenoma.

trabeculate
(trә-bek´u-lāt) marked with crossbars or trabeculae.

trabeculation
(trә-bek″u-la´shәn) the formation of trabeculae in a part.

trabeculectomy
(trә-bek″u-lek´tә-me) creation of a fistula between the anterior chamber of the eye and the subconjunctival space by surgical removal of a portion of the trabecular meshwork, performed to facilitate drainage of the aqueous humor in glaucoma.

trabeculoplasty
(trә-bek´u-lo-plas″te) plastic surgery of a trabecula.

trace element
a chemical element present or needed in tiny amounts by plants and animals; for humans, these include manganese, copper, cobalt, zinc, and iron.

tracer
(trās´әr) a means or agent by which certain substances or structures can be identified or followed, as a radioactive tracer. a mechanical device by which the outline of an object or the direction and extent of movement of a part may be graphically recorded; see also tracing. a diss...

trachea
(tra´ke-ә) pl. tra´cheae the air passage extending from the throat and larynx to the main bronchi; it is reinforced at the front and sides by a series of C-shaped rings of cartilage that keep the passage uniformly open. The trachea is lined with mucous membrane covered with small hairlike processes called cilia tha...

tracheal catheter
one with small holes at the end, especially designed for removal of secretions during tracheal suctioning.

tracheal ligaments
circular horizontal ligaments that join the tracheal cartilages together.

tracheal stenosis
scarring of the trachea with narrowing, usually as a result of injury from an artificial airway or trauma.

tracheal tube
endotracheal tube.

tracheal tugging
a pulling sensation in the trachea, due to aneurysm of the arch of the aorta; it is most apparent when the head is extended and a finger is placed on the thyroid cartilage. Called also Oliver or Porter sign.

tracheal veins
small branches that drain blood from the trachea into the brachiocephalic vein.

trachealgia
(tra″ke-al´jә) pain in the trachea.

trachealis muscle
tracheal muscle: a transverse layer of smooth fibers in the dorsal portion of the trachea; insertion, tracheal cartilages; innervation, autonomic fibers; action, lessens caliber of trachea.

tracheitis
(tra″ke-i´tis) inflammation of the trachea. bacterial tracheitis an acute crouplike bacterial infection of the upper airway in children, with coughing and high fever. Called also bacterial, membranous, or pseudomembranous croup.

trachelectomy
(tra″kә-lek´tә-me) cervicectomy.

trachelism
(tra´kә-liz-әm) spasm of the neck muscles; spasmodic reaction of the head in epilepsy.

trachelismus
(tra″kә-liz´mәs) trachelism.

trachelitis
(tra″kә-li´tis) cervicitis.

trachelocystitis
(tra″kә-lo-sis-ti´tis) cystitis colli.

trachelopexy
(tra´kә-lo-pek″se) fixation of the uterine cervix.

tracheloplasty
(tra´kә-lo-plas″te) cervicoplasty.

trachelorrhaphy
(tra″kә-lor´ә-fe) suture of the uterine cervix.

trachelotomy
(tra″kә-lot´ә-me) cervicotomy.

tracheobronchial
(tra″ke-o-brong´ke-әl) pertaining to the trachea and bronchi; called also bronchotracheal.

tracheobronchial tuberculosis
tuberculosis involving the bronchi, characterized by wheezing, redness and edema of mucous membranes, granulation tissue, and sometimes ulceration and scar formation that causes strictures of the bronchi.

tracheobronchitis
(tra″ke-o-brong-ki´tis) inflammation of the trachea and bronchi.

tracheobronchoscopy
(tra″ke-o-brong-kos´kә-pe) inspection of the interior of the trachea and bronchus.

tracheocele
(tra´ke-o-sēl″) hernial protrusion of the tracheal mucous membrane.

tracheoesophageal
(tra″ke-o-e-sof″ә-je´әl) pertaining to the trachea and esophagus; called also esophagotracheal.

tracheolaryngeal
(tra″ke-o-lә-rin´je-әl) laryngotracheal.

tracheomalacia
(tra″ke-o-mә-la´shә) softening of the tracheal cartilages, often as a congenital condition in infants or in patients of any age after prolonged intubation, and usually accompanied by a barking cough and expiratory stridor or wheezing; nearby organs such as the esophagus or aorta may compress the ...

tracheopathy
(tra″ke-op´ә-the) disease of the trachea.

tracheopharyngeal
(tra″ke-o-fә-rin´je-әl) pertaining to the trachea and pharynx.

tracheophony
(tra″ke-of´ә-ne) a voice sound heard over the trachea.

tracheoplasty
(tra´ke-o-plas″te) plastic repair of the trachea.

tracheorrhagia
(tra″ke-o-ra´jә) hemorrhage from the trachea.

tracheoschisis
(tra″ke-os´kĭ-sis) fissure of the trachea.

tracheoscopy
(tra″ke-os´kә-pe) inspection of the interior of the trachea. adj., tracheoscop´ic., adj.

tracheostenosis
(tra″ke-o-stә-no´sis) constriction of the trachea.

tracheostoma
(tra″ke-os´to-mә) an opening into the trachea through the neck; see tracheostomy.

tracheostomize
(tra″ke-os´tә-mīz) to perform a tracheostomy.

tracheostomy
(tra″ke-os´tә-me) creation of an opening into the trachea through the neck, with insertion of an indwelling endotracheal tube to facilitate passage of air or evacuation of secretions.

tracheostomy tube
a curved endotracheal tube that is inserted into the trachea through a tracheostomy.

tracheotome
(tra´ke-o-tōm) an instrument for incising the trachea.

tracheotomy
(tra″ke-ot´ә-me) incision of the trachea through the skin and muscles of the neck for exploration, for removal of a foreign body, or for obtaining a biopsy specimen or removing a local lesion. See also tracheostomy.

trachoma
(trә-ko´mә) pl. tracho´mata a chronic infectious disease of the conjunctiva and cornea, producing photophobia, pain, and lacrimation, caused by a strain of the bacteria Chlamydia trachomatis. It is most prevalent in parts of Africa and Asia but also occurs elsewhere, such as in dry parts of the southwestern United ...

trachoma bodies
inclusion bodies found in clusters in the cytoplasm of the epithelial cells of the conjunctiva in trachoma.

trachomatous
(trә-ko´mә-tәs) pertaining to or of the nature of trachoma.

tracing
(trās´ing) a graphic record produced by copying another, or scribed by an instrument capable of making a visual record of movements.