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mondofacto - Online Medical Dictionary Category: Health and Medicine > Medical Dictionary Date & country: 26/01/2008, UK Words: 116197

uroporphyrins
Porphyrins with four acetic acid and four propionic acid side chains attached to the pyrrole rings. ... (12 Dec 1998) ...

uropsammus
Synonym: gravel. ... 2. Any inorganic or uratic urinary sediment. ... Synonym: urocheras. ... Origin: uro-+ G. Psammos, sand ... (05 Mar 2000) ...

uropterin
Synonym for urothion ... A sulfur-containing pteridine derivative isolated from urine. ... Synonym: uropterin. ... (05 Mar 2000) ...

uropurpurin
A purple pigment in the urine. ... (05 Mar 2000) ...

uropygial gland
A compound alveolar gland of birds located on the dorsum of the tail or pygostyle; the secretion of this gland (fatty acids and wax) exits from a papilla on the dorsal surface at the base of the tail feathers; the bird applies the substance to its feathers by means of the bill when preening. The uropygial gland is lacking in some species but its wa …

uroradiology
The study of the radiology of the urinary tract. ... (05 Mar 2000) ...

urorectal
Relating to the urinary tract and rectum. ... (05 Mar 2000) ...

urorectal fold
urorectal septum, urorectal membrane ...

urorectal membrane
In the embryo, urorectal septum separating the cloaca into urogenital sinus and rectum. ... Synonym: urorectal fold. ... (05 Mar 2000) ...

urorectal septum
In embryos, a partition dividing the cloaca into a dorsal, rectal portion and a ventral portion called the urogenital sinus; reaching the cloacal membrane at about the time of its disintegration, the urorectal septum divides the cloacal exit into an anal and a urogenital orifice. ... Synonym: urorectal fold. ... (05 Mar 2000) ...

urorosein
A chromogen in the urine that forms a red colour on the addition of nitric acid; normally exists in very minute quantities but is increased in tuberculosis and other wasting diseases, and is related to ingestion of indole compounds. ... (05 Mar 2000) ...

urorubin
A red pigment in urine made more visible by treatment with hydrochloric acid. ... (05 Mar 2000) ...

urorubrohematin
A reddish pigment occasionally present in the urine in various chronic diseases. ... (05 Mar 2000) ...

uroschesis
1. Retention of urine. ... 2. Suppression of urine. ... Origin: uro-+ G. Schesis, a checking ... (05 Mar 2000) ...

uroscopic
Relating to uroscopy. ... (05 Mar 2000) ...

urosemiology
The study of the urine as an aid to diagnosis. ... Origin: uro-+ G. Semeion, a sign, + logos, study ... (05 Mar 2000) ...

urosepsin
A substance formed by the decomposition of urine, supposed to be the cause of septic poisoning after urinary extravasation. ... (05 Mar 2000) ...

urosepsis
1. Sepsis resulting from the decomposition of extravasated urine. ... 2. Sepsis from obstruction of infected urine. ... Origin: uro-+ G. Sepsis, decomposition ... (05 Mar 2000) ...

urospectrin
A pigment found in the urine, possibly the same as urobilin. ... (05 Mar 2000) ...

urotensins
Teleost hormones. A family of small peptides isolated from urophyses of bony fishes. They have many different physiological effects, including long-lasting hypotensive activity and have been proposed as antihypertensives. There are at least four different compounds: urotensin I, urotensin II, urotensin III, and urotensin IV. ... (12 Dec 1998) ...

urothelium
A layer of transitional epithelium in the wall of the bladder, ureter, and renal pelvis, external to the lamina propria. ... (12 Dec 1998) ...

urothion
A sulfur-containing pteridine derivative isolated from urine. ... Synonym: uropterin. ... (05 Mar 2000) ...

urothorax
The presence of urine in the thoracic cavity, usually following complex multiple organ injuries. ... (05 Mar 2000) ...

ursodeoxycholic acid
<chemical> Epimer of chenodeoxycholic acid. It is a mammalian bile acid found first in the bear and is apparently either a precursor or a product of chenodeoxycholate. Its administration changes the composition of bile and may dissolve gallstones. It is used as a cholagogue and choleretic. ... Pharmacological action: cholagogues and choleretic …

ursuline
One of an order of nuns founded by St. Angela Merici, at Brescia, in Italy, about the year 1537, and so called from St. Ursula, under whose protection it was placed. The order was introduced into Canada as early as 1639, and into the United States in 1727. The members are devoted entirely to education. ... Origin: Cf. F. Ursuline. ... Source: Webster …

urticant
Producing a wheal or other similar itching agent. ... Origin: L. Urtica, nettle; see urtica ... (05 Mar 2000) ...

urticaria
<dermatology> A transient condition of the skin, usually caused by an allergic reaction, characterised by pale or reddened irregular, elevated patches and severe itching, hives. ... (18 Nov 1997) ...

urticaria acuta
Synonym for febrile urticaria ... Urticaria accompanied by slight constitutional symptoms. ... Synonym: acute urticaria, urticaria acuta, urticaria febrilis. ... (05 Mar 2000) ...

urticaria bullosa
An eruption of wheals capped with subepidermal vesicles. ... Synonym: urticaria vesiculosa. ... (05 Mar 2000) ...

urticaria chronica
Synonym for chronic urticaria ... A form of urticaria in which the wheals recur frequently, or persist. ... Synonym: urticaria chronica. ... (05 Mar 2000) ...

urticaria conferta
A form of urticaria in which the wheals are aggregated in a group. ... (05 Mar 2000) ...

urticaria endemica
Urticaria epidemica, urticaria caused by the nettling hairs of certain caterpillars. ... (05 Mar 2000) ...

urticaria factitia
Synonym for dermatographism ... A form of urticaria in which whealing occurs in the site and in the configuration of application of stroking (pressure, friction) of the skin. ... Synonym: autographism, dermagraphy, dermatography, dermographia, dermographism, dermography, factitious urticaria, skin writing, urticaria factitia. ... Origin: dermato-+ G. …

urticaria febrilis
Synonym for febrile urticaria ... Urticaria accompanied by slight constitutional symptoms. ... Synonym: acute urticaria, urticaria acuta, urticaria febrilis. ... (05 Mar 2000) ...

urticaria haemorrhagica
Urticaria bullosa in which the serous exudate contains blood. ... (05 Mar 2000) ...

urticaria maculosa
A chronic form of urticaria with lesions of a red colour and little oedema. ... (05 Mar 2000) ...

urticaria medicamentosa
An urticarial form of drug eruption. ... (05 Mar 2000) ...

urticaria papulosa
Synonym for papular urticaria ... A sensitivity reaction to insect bites, especially human and pet fleas, seen mostly in young children as wheals followed by papules on exposed areas. ... Synonym: lichen urticatus, prurigo infantilis, urticaria papulosa. ... (05 Mar 2000) ...

urticaria perstans
A form of chronic urticaria in which the wheals persist unchanged for long periods; includes urticarial vasculitis. ... (05 Mar 2000) ...

urticaria pigmentosa
The most common form of mastocytosis. It occurs primarily in children and is typically characterised by multiple persistent small, reddish-brown, hyperpigmented, pruritic macules and papules. They are located most commonly on the trunk, but seen also on the extremities, head, and neck. ... (12 Dec 1998) ...

urticaria subcutanea
Urticaria in which itching is present without the wheals. ... (05 Mar 2000) ...

urticaria tuberosa
Synonym for angioedema ... A vascular reaction involving the deep dermis or subcutaneous or submucal tissues, representing localised oedema caused by dilatation and increased permeability of the capillaries and characterised by development of giant wheals. ... (18 Nov 1997) ...

urticaria vesiculosa
Synonym for urticaria bullosa ... An eruption of wheals capped with subepidermal vesicles. ... Synonym: urticaria vesiculosa. ... (05 Mar 2000) ...

urticarial
Urticarious ... Relating to or marked by urticaria. ... (05 Mar 2000) ...

urticarial fever
Synonym for schistosomiasis japonica ... Schistosomiasis caused by schistosoma japonicum. It is endemic in the far east and affects the bowel, liver, and spleen. ... (12 Dec 1998) ...

urticarial vasculitis
Cutaneous lesions resembling urticaria but lasting more than 24 hours, with biopsy findings of leukocytoclastic vasculitis and variable systemic changes, usually with hypocomplementemia. ... Synonym: hypocomplementemic vasculitis. ... (05 Mar 2000) ...

urticate
1. To perform urtication. ... 2. Marked by the presence of wheals. ... Origin: L. Urticatus ... (05 Mar 2000) ...

urus
<zoology> A very large, powerful, and savage extinct bovine animal (Bos urus or primigenius) anciently abundant in Europe. It appears to have still existed in the time of Julius Caesar. It had very large horns, and was hardly capable of domestication. Called also, ur, ure, and tur. ... Origin: L.; of Teutonic origin. See Aurochs. ... Source: We …

urushiol
A mixture of nonvolatile hydrocarbons, derivatives of catechol with unsaturated C15 or C17 side chains, constituting the active allergen of the irritant oil of poison ivy, Toxicodendron radicans, poison oak, T. Diversilobum, and the Asiatic laquer tree, T. Verniciferum. ... Origin: Jap. Urushi, lac, + L. Oleum, oil ... (05 Mar 2000) ...

urushiol oxidase
Synonym for laccase ... <enzyme> An enzyme oxidizing benzenediols to semiquinones with O2. ... Synonym: monophenol monooxygenase, phenol oxidase, phenolase, polyphenol oxidase, urushiol oxidase. ... (05 Mar 2000) ...

usable light range
<microscopy> The ratio of the maximum to the minimum levels of illuminance over which a video camera or camera tube can provide a usable signal. Being aided by automatic irises, gray-wedge wheels, etc., in addition to varying electrode voltages where permissible, the usable light range can be several orders of magnitude greater than the intra …

usage
1. The act of using; mode of using or treating; treatment; conduct with respect to a person or a thing; as, good usage; ill usage; hard usage. 'My brother Is prisoner to the bishop here, at whose hands He hath good usage and great liberty.' (Shak) ... 2. Manners; conduct; behavior. 'A gentle nymph was found, Hight Astery, excelling all the crew In c …

USAN
<abbreviation> United States Adopted Names. ... (05 Mar 2000) ...

use
1. The act of employing anything, or of applying it to one's service; the state of being so employed or applied; application; employment; conversion to some purpose; as, the use of a pen in writing; his machines are in general use. 'Books can never teach the use of books.' (Bacon) 'This Davy serves you for good uses.' (Shak) 'When he framed All thi …

useless
Having, or being of, no use; unserviceable; producing no good end; answering no valuable purpose; not advancing the end proposed; unprofitable; ineffectual; as, a useless garment; useless pity. 'Not to sit idle with so great a gift Useless, and thence ridiculous.' (Milton) ... Synonym: Fruitless, ineffectual. ... Useless, Fruitless, Ineffectual. We s …

user-computer interface
The portion of an interactive computer program that issues messages to and receives commands from a user. ... (12 Dec 1998) ...

USFS
United States Department of Agriculture Forest Service. ... (05 Dec 1998) ...

USFWS
United States Fish and Wildlife Service. ... (05 Dec 1998) ...

Usher, Barney
<person> Canadian dermatologist, *1899. ... See: Senear-Usher disease, Senear-Usher syndrome. ... (05 Mar 2000) ...

Usher, Charles Howard
<person> English ophthalmologist, 1865-1942. ... See: Usher's syndrome. ... (05 Mar 2000) ...

Usher's syndrome
<syndrome> Autosomal recessive inheritance; the two forms are distinguishable only by linkage data; causing sensorineural heraring loss and retinitis pigmentosa. ... (05 Mar 2000) ...

usnic acid
An organic acid extracted from the lichen Usnea barbata whichhas antibiotic properties, particularly against Gram-positive bacteriasuch at M. Tuberculosis as well as some pathogenic fungi. ... (09 Oct 1997) ...

USP
<abbreviation> United States Pharmacopeia. ... See: Pharmacopeia. ... (05 Mar 2000) ...

USP unit
A unit as defined and adopted by the United States Pharmacopeia. ... (05 Mar 2000) ...

USPHS
The United States Public Health Service, a part of the department of health and human services (hhs). The usphs is responsible for the public health of the american people. It administers a number of important health agencies including the food and drug administration (FDA), centres for disease control (cdc), and the national institutes of health ( …

usquebaugh
1. A compound distilled spirit made in Ireland and Scotland; whisky. 'The Scottish returns being vested in grouse, white hares, pickled salmon, and usquebaugh.' (Sir W. Scott) ... 2. A liquor compounded of brandy, or other strong spirit, raisins, cinnamon and other spices. ... Origin: Ir. Or Gael. Uisge beatha, literally, water of life; uisge water + …

ustilaginales
An order of basidiomycetous fungi; some species are parasitic on grasses and maise. ... (12 Dec 1998) ...

ustilaginism
Poisoning by Ustilago maydis (corn smut), which produces burning, itching, hyperaemia, acrocyanosis, and oedema of the extremities; resembles ergotism, pellagra, or infantile acrocynia. ... (05 Mar 2000) ...

ustilago
A genus of basidiomycetous smut fungi comprising the loose smuts. ... (12 Dec 1998) ...

Ustilago maydis
A species that resembles ergot of rye in its metabolic action; its black spores on the ears of corn are dispersed by wind and can cause contamination of laboratory cultures. ... Synonym: corn ergot, corn smut, Ustilago zeae. ... (05 Mar 2000) ...

Ustilago zeae
Synonym for Ustilago maydis ... A species that resembles ergot of rye in its metabolic action; its black spores on the ears of corn are dispersed by wind and can cause contamination of laboratory cultures. ... Synonym: corn ergot, corn smut, Ustilago zeae. ... (05 Mar 2000) ...

ustulation
1. The act of burning or searing. (Sir W. Petty) ... 2. <chemistry> The operation of expelling one substance from another by heat, as sulphur or arsenic from ores, in a muffle. ... 3. <pharmacology> The roasting or drying of moist substances so as prepare them for pulverizing. The burning of wine. ... 4. Lascivious passion; concupiscence. …

usual dose
This is the typical oral dose (all inhalational, suppository or injectables will be specified) given for a particular clinical situation. In most cases, the dose prescribed by your physician will be influenced by many factors including patient age, general health, health history, pregnancy, breast feeding, allergic history, weight and the specific …

usurp
To commit forcible seizure of place, power, functions, or the like, without right; to commit unjust encroachments; to be, or act as, a usurper. 'The parish churches on which the Presbyterians and fanatics had usurped.' (Evelyn) 'And now the Spirits of the Mind Are busy with poor Peter Bell; Upon the rights of visual sense Usurping, with a prevalenc …

usurpation
Assumption of pacemaker function of the heart by a subsidiary focus as a result of its own increased automaticity; e.g., accelerated junctional pacemaker takes command when it exceeds the sinus rate. ... Origin: L. Usurpo, pp. -atus, to seise ... (05 Mar 2000) ...

uta
A mild form of New World or American cutaneous leishmaniasis caused by Leishmania peruana, occurring in the high Andean valleys of Peru and Bolivia, and characterised by numerous small dermal lesions occurring almost exclusively on exposed skin surfaces; the dog is an important reservoir. Unlike all other forms of American cutaneous leishmaniasis, …

uterectomy
Synonym for hysterectomy ... <procedure, surgery> The operation of excising the uterus, performed either through the abdominal wall or through the vagina. ... Origin: Gr. Ektom = excision ... (18 Nov 1997) ...

uterine
<anatomy> Pertaining to the uterus (womb). ... (27 Sep 1997) ...

uterine appendages
The ovaries, uterine (fallopian) tubes, and associated ligaments. ... Synonym: adnexa uteri. ... (05 Mar 2000) ...

uterine artery
<anatomy, artery> Origin, internal iliac; distribution, uterus, upper part of vagina, round ligament, and medial part of uterine (fallopian) tube; anastomoses, ovarian, vaginal, inferior epigastric. Supplies maternal circulation to placenta during pregnancy. ... Synonym: arteria uterina. ... (05 Mar 2000) ...

uterine biopsy
A procedure by which a sample is taken of the endometrial lining of the uterus. This may be performed with or without an anaesthetic. Risks include bleeding after the procedure. This test is usually performed in the evaluation of abnormal menses, heavy menstruation or post-menopausal bleeding. It may be part of an infertility evaluation. Endometria …

uterine calculus
A calcified myoma of the uterus. ... Synonym: hysterolith, uterolith. ... (05 Mar 2000) ...

uterine cancer
A malignant growth of the uterus (womb). A common symptom includes the onset of vaginal bleeding after menopause. ... (27 Sep 1997) ...

uterine cavity
Cavity of uterus, the space within the uterus extending from the cervical canal to the openings of the uterine tubes. ... Synonym: cavitas uteri, cavum uteri. ... (05 Mar 2000) ...

uterine colic
Painful cramps of the uterine muscle sometimes occurring at the menstrual period, or in association with uterine disease. ... (05 Mar 2000) ...

uterine contraction
Contraction of the uterine muscle. ... (12 Dec 1998) ...

uterine dysmenorrhoea
A form of secondary dysmenorrhoea resulting from disease of the uterus. ... (05 Mar 2000) ...

uterine extremity of ovary
The rounded medial end of the ovary, usually directed toward the uterus. ... Synonym: extremitas uterina ovarii, medial pole of ovary. ... (05 Mar 2000) ...

uterine fibroid
Benign smooth muscle tumours of the uterus (womb). Also called leiomyomata. May cause irregular menses. ... (27 Sep 1997) ...

uterine filling defect
<radiology> Technical, bubble, blood clot, mucoid material, congenital fold, pseudoadhesions / ridging -- folds long axis, neoplasm, submucosal leiomyoma, adenoma, endometrial carcinoma, pregnancy-related, pregnancy, molar pregnancy, retained conceptus, polyp, septated uterus, synechiae, IUD, iatrogenic (post-op) ... (12 Dec 1998) ...

uterine glands
Numerous simple tubular glands in the uterine mucosa that secrete a glycogen-rich mucous fluid during the luted phase of the menstrual cycle. ... Synonym: glandulae uterinae. ... (05 Mar 2000) ...

uterine haemorrhage
The escape of blood from vessels in the uterus. ... (12 Dec 1998) ...

uterine horn
cornu uteri ...

uterine inertia
Failure of the uterus to contract with normal strength and duration and at normal intervals during labour. It is also called uterine atony. ... (12 Dec 1998) ...

uterine insufficiency
Atony of the uterine musculature. ... (05 Mar 2000) ...

uterine inversion
A turning of the uterus inside out, whereby the fundus is forced through the cervix and protrudes into or outside of the vagina. ... (12 Dec 1998) ...

uterine milk
A whitish fluid secretion between the villi of the placenta, which nourishes the implanting ovum. ... (05 Mar 2000) ...

uterine monitoring
Measurement or recording of contraction activity of the uterine muscle. It is used to determine progress of labour and assess status of pregnancy. It is also used in conjunction with foetal monitoring to determine foetal response to stress of maternal uterine contractions. ... (12 Dec 1998) ...

uterine neoplasms
Neoplasms of the uterus. ... (12 Dec 1998) ...

uterine opening of uterine tubes
Synonym for uterine ostium of uterine tubes ... The uterine opening of the oviduct. ... Synonym: ostium uterinum tubae, ostium internum, uterine opening of uterine tubes. ... (05 Mar 2000) ...