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Ulcer, Buruli
A disorder caused by the bacterium Mycobacterium ulcerans that starts as a painless swelling in the skin, most commonly in the limbs (the arms and legs) and causes severely ...
Ulcer, duodenal
An ulcer (a hole in the lining) of the duodenum (the first portion of the small intestine). Ulcer formation is related to H. pyloridus bacteria in the stomach, anti-inflammatory ...
Ulcer, esophageal
A hole in the lining of the esophagus (tube-like organ leading from the throat to the stomach) corroded by the acidic digestive juices secreted by the stomach cells. Ulcer ...
Ulcer, gastric
A hole in the lining of the stomach corroded by the acidic digestive juices which are secreted by the stomach cells. Ulcer formation is related to H. pyloridus bacteria in the ...
Ulcer, peptic
A peptic ulcer is a hole in the lining of the stomach, duodenum, or esophagus. A peptic ulcer of the stomach is called a gastric ulcer, an ulcer of the duodenum is a duodenal ...
Ulcer, stasis
A stasis ulcer is an ulcer (a crater) that develops in an area in which the circulation is sluggish and the venous return (the return of venous blood toward the heart) is poor. ...
ulcerate
To form an ulcer.
ulcerated
Having undergone ulceration.
Ulceration
The process or fact of being eroded away, as by an ulcer. * * * 1. The formation of an ulcer. 2. An ulcer or aggregation of ulcers. - tracheal u. erosion of the tracheal ...
ulcerative
Relating to, causing, or marked by an ulcer or ulcers.
Ulcerative colitis
A relatively common disease that causes inflammation of the large intestine (the colon). The cause is unknown. Ulcerative colitis is a form of inflammatory bowel disease. It has ...
Ulcerative gingivitis
This is trench mouth, a progressive painful infection with ulceration, swelling and sloughing off of dead tissue from the mouth and throat due to the spread of infection from the ...
Ulcerative proctitis
Ulcerative colitis that is limited to the rectum. Ulcerative colitis itself is a relatively common disease involving inflammation of the large intestine (the colon). The cause ...
ulcerogenic
Ulcer-producing.
ulceroglandular
Denoting a local ulceration at a site of infection followed by regional or generalized lymphadenopathy.
ulceromembranous
Relating to or characterized by ulceration and the formation of a false membrane.
ulcus
SYN: ulcer. [L.]
ule-
See ulo-.
ulegyria
A defect of the cerebral cortex characterized by narrow and distorted gyri; may be congenital or the result of scars. [G. oule, scar, + gyros, ring]
ulerythema
Scarring with erythema. [G. oule, scar, + erythema, redness of the skin] - u. ophryogenes folliculitis of the eyebrows resulting in scarring and alopecia.
ulex europaeus
A lectin that reacts specifically with α-l-fucose, used as a marker for endothelial cells in paraffin sections.
Ullmann
Emerich, Hungarian surgeon, 1861–1937. See U. line, U. syndrome.
Ullrich
Otto, German physician, 1894–1957. See Morquio-U. disease.
Ullrich congenital muscular dystrophy
A disorder evident at birth characterized by muscle weakness, contractures of multiple joints, and hyperextensibility (looseness) of joints, particularly distal joints (well away ...
ulna
The medial and larger of the two bones of the forearm. SYN: cubitus (2) [TA]. [L. elbow, arm, fr. G. olene]
ulnad
In a direction toward the ulna. [ulna + L. ad, to]
ulnar
Relating to the ulna, or to any of the structures ( e.g., artery, nerve) named from it; relating to the u. or medial aspect of the upper limb. SYN: ulnaris [TA].
ulnaris
SYN: ulnar. [Mod. L.]
ulnen
Relating to the ulna independent of other structures. [ulna + G. en, in]
ulnocarpal
Relating to the ulna and the carpus, or to the ulnar side of the wrist.
ulnoradial
Relating to both ulna and radius; denoting the two articulations, ligaments, etc., between them.
ulo-, ule-
1. Scar, scarring. [G. oule] 2. The gums. SEE ALSO: gingivo-. [G. oulon] 3. Curly. [G. oulo-, ouli-, woolly.]
Ulocarcinoma
Cancer of the gums. It is often associated with the use of smokeless (chewing) tobacco. Diagnosis is by observation and confirmed by biopsy. Treatment may include radiation, ...
uloid
1. Resembling a scar. 2. A scarlike lesion due to a degenerative process in deeper layers of skin. [G. oule, scar + eidos, resemblance]
ulotrichous
Having curly hair. Cf.:leiotrichous. [G. oulotrichos, curly haired, fr. oulos, wooly, + thrix (trich-), hair]
ultimobranchial
In embryology, relating to the caudal-most pharyngeal pouch. [L. ultimus, last, + G. branchia, gills]
ultimum moriens
The right atrium of the heart, said to contract after the rest of the heart is still. [L. the last thing dying]
ultra-
Excess, exaggeration, beyond. [L. beyond]
ultrabrachycephalic
Denoting an extremely short skull, one with an index of at least 90.
ultracentrifugation
The process of subjecting to an ultracentrifuge.
ultracentrifuge
A high-speed centrifuge (up to 100,000 rpm) by means of which large molecules, e.g., of protein or nucleic acid s, are caused to sediment at practicable rates; used for ...
ultracytostome
Former name for micropore. [ ultra- + G. kytos, cell, + stoma, mouth]
ultradian
Relating to biologic variations or rhythms occurring in cycles more frequent than every 24 hours. Cf.:circadian, infradian. [ ultra- + L. dies, day]
ultradolichocephalic
Denoting a very long skull, one with a cephalic index of less than 65.
Ultrafast CT
Electron beam computerized tomography (EBCT), a new (and controversial) noninvasive test for the detection of coronary artery disease (CAD). Ultrafast computerized tomography ...
ultrafilter
A semipermeable membrane ( collodion, fish bladder, or filter paper impregnated with gels) used as a filter to separate colloids and large molecules from water and small ...
ultrafiltration
Filtration through a semipermeable membrane or any filter that separates colloid solutions from crystalloids or separates particles of different size in a colloid mixture.
ultraligation
Ligation of a blood vessel beyond the point where a branch is given off.
ultramicroscope
A microscope that utilizes refracted light for visualizing objects not visible with the ordinary microscope when direct light is used.
ultramicroscopic
SYN: submicroscopic.
ultramicrotome
A microtome used in cutting sections 0.1 μm thick, or less, for electron microscopy.
ultramicrotomy
The cutting of ultrathin sections for electron microscopy by use of an ultramicrotome.
ultrasonic
Relating to energy waves similar to those of sound but of higher frequencies (above 30,000 Hz). [ ultra- + L. sonus, sound]
Ultrasonic-assisted liposuction
Liposuction involves the surgical suctioning of fat deposits from specific parts of the body, the most common being the abdomen (the "tummy"), buttocks ("behind"), hips, thighs ...
ultrasonics
The science and technology of ultrasound, its characteristics and phenomena.
ultrasonogram
The image obtained by ultrasonography. SEE ALSO: echogram. SYN: sonogram.
ultrasonograph
Computerized instrument used to create an image using ultrasound. SYN: sonograph. [ ultra- + L. sonus, sound, + G. grapho, to write]
ultrasonographer
A person who performs and/or interprets ultrasonographic examinations. SYN: echographer, sonographer.
ultrasonography
The location, measurement, or delineation of deep structures by measuring the reflection or transmission of high frequency or ultrasonic waves. Computer calculation of the ...
ultrasonosurgery
Use of ultrasound techniques to disrupt cells, tissues, or tracts, particularly in the central nervous system.
Ultrasound
High-frequency sound waves. Ultrasound waves can be bounced off of tissues using special devices. The echoes are then converted into a picture called a sonogram. Ultrasound ...
Ultrasound during pregnancy
Ultrasound imaging has been done during pregnancy for over three decades. It has proved to be a very useful and very effective diagnostic procedure. A number of epidemiological ...
Ultrasound, Doppler
A form of ultrasound that can detect and measure blood flow. Doppler ultrasound depends on the Doppler effect, a change in the frequency of a wave resulting here from the motion ...
Ultrasound, transvaginal
A technique in which sound waves are sent out by an ultrasound probe that has been inserted in the vagina. The waves go through the vaginal wall and bounce off the ovaries, and a ...
Ultrasound/Ultrasonography
: A test in which high-frequency sound waves (ultrasound) are bounced off tissues and the echoes are converted into a picture
ultrastructure
Structures or particles seen with the electron microscope. SYN: fine structure.
ultratherm
A short-wave diathermy machine. [ ultra- + G. therme, heat]
ultraviolet
Denoting electromagnetic rays at higher frequency than the violet end of the visible spectrum. - u. A (UVA) u. radiation from 320 to 400 nm that causes skin tanning but is very ...
Ultraviolet A
One of the three types of invisible light rays (together with ultraviolet B and ultraviolet C) given off by the sun. Although ultraviolet C is the most dangerous type of ...
Ultraviolet B
One of the three types of invisible light rays (together with ultraviolet A and ultraviolet C) given off by the sun. Although ultraviolet C is the most dangerous type of ...
Ultraviolet C
One of the three types of invisible light rays (together with ultraviolet A and ultraviolet B) given off by the sun. Although ultraviolet C is the most dangerous type of ...
Ultraviolet radiation
Invisible rays that are part of the energy that comes from the sun. Ultraviolet radiation can burn the skin and cause skin cancer. Ultraviolet radiation is made up of three types ...
ultromotivity
Power of spontaneous movement. [L. ultro, beyond, on one's own part + L. motio, movement]
ululation
Rarely used term for the inarticulate crying of emotionally disturbed persons. [L. ululo, pp. -atus, to howl]
Ulysses
Latin form of Greek mythological character. See U. syndrome.
umbilical
Relating to the umbilicus. SYN: omphalic.
Umbilical cord
The cord that connects the developing fetus with the placenta. Within this cord run the two umbilical arteries and the umbilical vein. At birth, the umbilical cord is clamped and ...
umbilicate, umbilicated
Of navel shape; pitlike; dimpled. [L. umbilicatus]
umbilication
1. A pit or navellike depression. 2. Formation of a depression at the apex of a papule, vesicle, or pustule.
Umbilicus
The vestige left behind on a newborn’s belly when the umbilical cord is cut. Also called the navel or belly button. * * * The pit in the center of the abdominal wall marking ...
umbo
1. [NA] A projecting point of a surface. 2. SYN: u. of tympanic membrane. [L. boss of a shield, a knob] - u. membranae tympani [TA] SYN: u. of tympanic membrane. - u. of ...
UMP
Abbreviation for uridine 5′-monophosphate.
UMP synthase
SYN: uridylic acid.
un-
1. Not, akin to L. in- and G. a-, an-. 2. Reversal, removal, release, deprivation. 3. An intensive action. [M.E.]
uncal
Denoting or relating to the uncus.
Uncertainty
You may be uncertain why "uncertainty" deserves a place in a medical dictionary but some would say that uncertainty is a key element in medicine. "The core predicament of medicine ...
unci
Plural of uncus.
uncia
An ounce. [L. a twelfth part, an ounce]
unciform
SYN: uncinate. [L. uncus, hook, + forma, form]
unciforme
SYN: hamate (bone). [Mod. L. unciform]
Uncinaria
A genus of nematode hookworms that infect various mammals. Species include U. stenocephala, the European hookworm of dogs, cats, and various wild carnivores, also found in North ...
uncinariasis
SYN: ancylostomiasis.
uncinate
1. Hooklike or hook-shaped. 2. Relating to an uncus or, specifically, to the u. gyrus (2) or a process of the pancreas or of a vertebra. SYN: unciform. [L. uncinatus]
uncinatum
SYN: hamate (bone).
uncipressure
Arrest of hemorrhage from a cut artery by pressure with a blunt hook. [L. uncus, hook]
unco-ossified
Not co-ossified; not united into one bone.
uncomplemented
Not united with complement and therefore inactive.
Unconscious
1) Interruption of awareness of oneself and one’s surroundings, lack of the ability to notice or respond to stimuli in the environment. A person may become unconscious due to ...
Unconsciousness, temporary
A partial or complete loss of consciousness with interruption of awareness of oneself and ones surroundings. When the loss of consciousness is temporary and there is spontaneous ...
uncouplers
Substances such as dinitrophenol that allow oxidation in mitochondria to proceed without the usual concomitant phosphorylation to produce ATP; these poisons thus “uncouple” ...
uncovertebral
Pertaining to or affecting the uncinate process of a vertebra.
unction
The action of anointing or rubbing with an ointment or oil. [L. unctio, fr. ungo, pp. unctus, to anoint]
unctuous
Greasy or oily. [L. unctuosus, fr. unctio, unction]
uncture
SYN: ointment.
uncus
1. Any hook-shaped process or structure. 2. The anterior, hooked extremity of the parahippocampal gyrus on the basomedial surface of the temporal lobe; the anterior face of the ...
undecenoic acid
SYN: undecylenic acid.
undecoylium chloride
A topical antiseptic.
undecoylium chloride-iodine
A complex of iodine with undecoylium chloride; a cationic detergent used topically as a germicidal agent.
undecylenate
A salt of undecylenic acid.
undecylenic acid
An acid present in small amounts in sweat; used with its zinc salt in ointments, or as a powder in the treatment of fungus diseases of the skin, psoriasis, and certain other ...
underachievement
Failure to achieve as well as one's abilities would seem to allow.
underachiever
One who manifests underachievement.
underbite
A nontechnical term applied to mandibular underdevelopment or to excessive maxillary development.
undercut
1. That portion of a tooth that lies between the survey line (height of contour) and the gingivae. 2. The contour of a cross-section of a residual ridge or dental arch which ...
underdrive pacing
Electrical stimulation of the heart at a rate lower than that of an existing tachycardia; designed to capture the heart between beats, i.e., to interrupt a reentry pathway in ...
undernutrition
A form of malnutrition resulting from a reduced supply of food or from inability to digest, assimilate, and utilize the necessary nutrients.
undersensing
Non-sensing of the intracardiac atrial or ventricular depolarization signal by a pacemaker.
undershoot
A temporary decrease below the final steady-state value that may occur immediately following the removal of an influence that had been raising that value, i.e., overshoot in a ...
understain
To stain less deeply than usual.
underventilation
SYN: hypoventilation.
underwinding
The effect of negative supercoiling on a structure of DNA.
undifferentiated
Not differentiated; e.g., primitive, embryonic, immature, or having no special structure or function.
undine
A small glass flask that was used in irrigation of the conjunctiva. [Mod. L. undina, fr. L. unda, wave]
undiversion
Surgical restoration of continuity in any organ system, the flow through which had previously been diverted; e.g., between the upper urinary tract and bladder after supravesical ...
undoing
In psychology and psychiatry, an unconscious defense mechanism by which one symbolically acts out in reverse some earlier unacceptable behavior.
Undulant fever
An infectious disease due to the bacteria Brucella that characteristically causes rising and falling fevers, sweats, malaise, weakness, anorexia, headache, myalgia (muscle ...
Undulatant
Having a wavy border or form. Also, rising and falling like a wave. For example, the border of a wound may be undulant, as may the edge of a rash. And sound waves may also be ...
Undulate
To have a wavy border or form. Also, to rise and fall like a wave. For example, the border of a wound may undulate, as may the edge of a rash. And sound waves may undulate. The ...
ungual
Relating to a nail or the nails. SYN: unguinal. [L. unguis, nail]
unguent
SYN: ointment. [L. unguentum]
ungues
Plural of unguis.
Unguiculata
A division of Mammalia including all mammals having nails or claws, as distinguished from the Ungulata. [L. unguiculus, nail or claw]
unguiculate
Having nails or claws, as distinguished from hooves.
unguiculus
A small nail or claw. [L. dim. of unguis, nail]
unguinal
SYN: ungual.
unguis
SYN: nail (1). [L.] - u. aduncus SYN: ingrown nail. - u. avis SYN: calcarine spur. - Haller u. SYN: calcarine spur. - u. incarnatus SYN: ingrown nail.
Ungulata
A division of Mammalia containing the mammals with hooves, as distinguished from the Unguiculata.
ungulate
Having hooves. [L. ungulatus, fr. ungula, hoof]
unguligrade
Walking on hooves, as by horses, pigs, and ruminants. [L. ungula, a hoof, + gradus, a step]
uni-
One, single, not paired; corresponds to G. mono-. [L. unus]
uniarticular
SYN: monarticular.
uniaxial
Having but one axis; growing chiefly in one direction.
unibasal
Having but one base.
Uniblue A
A protein stain used in electrophoresis.
unicameral, unicamerate
SYN: monolocular.
unicellular
Composed of but one cell, as in the protozoons; for such u. organisms capable of undertaking life processes independently of other cells, the term acellular is also used.
unicentral
Having a single center, as of growth or of ossification.
unicorn
SYN: unicornous.
unicornous
Having one horn, or cornu. SYN: unicorn. [L. unicornis, fr. uni- + cornu, horn]
Unicornuate
Having one horn or being horn-shaped. The uterus is normally unicornuate.
unicuspid, unicuspidate
Having only one cusp, as a canine tooth.
unifamilial
Relating to or occurring in a single family; denoting especially a nervous disease attacking several of the children in the same family in which no hereditary trait is apparent.
uniflagellate
SYN: monotrichous.
uniforate
Having but one foramen, pore, or opening of any kind.
uniform
1. Having but one form; not variable in form. 2. Of the same form or shape as another structure or object. [L. uniformis, fr. uni- + forma, form]
unigerminal
Relating to a single germ or ovum, e.g., monozygotic. SYN: monogerminal, monozygotic, monozygous.
uniglandular
Involving, relating to, or containing but one gland.
unilaminar, unilaminate
Having but one layer or lamina.
unilateral
Confined to one side only.
unilobar
Having but one lobe.
unilocal
Strictly, denoting a trait in which the genetic component is contributed exclusively by one locus; in practice, any trait in which the contribution from one locus is so large that ...
unilocular
Having but one compartment or cavity, as in a fat cell. [ uni- + L. loculus, compartment]
unimolecular
Denoting a single molecule. SEE ALSO: molecularity. SYN: monomolecular (1).
uninuclear, uninucleate
Having but one nucleus. Cf.:mononuclear.
uniocular
1. Relating to one eye only. 2. Having vision in only one eye.
union
1. Joining or amalgamation of two or more bodies. 2. Structural adhesion or growing together of the edges of a wound. 3. Healing of a fracture represented by the development of ...
unioval, uniovular
Relating to or formed from a single ovum.
Uniparous
1) Having produced only one offspring. Also called primiparous. 2) Producing only one offspring at a time. See also multiparous.
unipennate
semipennate. [ uni- + L. penna, feather]
unipolar
1. Having but one pole; denoting a nerve cell from which the branches project from one side only. 2. Situated at one extremity only of a cell.
uniport
Transport of a molecule or ion through a membrane by a carrier mechanism (uniporter), without known coupling to any other molecule or ion transport. Cf.:antiport, symport. [ ...
uniporter
A protein that mediates the transport of one molecule or ion through a membrane without known coupling to the transport of any other molecule or ion.
unipotent
Referring to those cells that produce a single type of daughter cell; e.g., a u. stem cell. Cf.:pluripotent cells, under cell.
uniseptate
Having but one septum or partition.
unit
1. One; a single person or thing. 2. A standard of measure, weight, or any other quality, by multiplications or fractions of which a scale or system is formed. 3. A group of ...
Unit, international (IU)
An international unit (IU) is an internationally accepted amount of a substance. This type of measure is used for the fat-soluble vitamins (such as vitamins A, D and E) and ...
United Network for Organ Sharing (UNOS)
The nationwide umbrella for transplantation organ sharing in the U.S. UNOS states that it is "a private, not-for-profit, membership corporation qualified as a charitable ...
United States Adopted Names
Designation for nonproprietary name s (for drugs) adopted by the USAN Council in cooperation with the manufacturers concerned; the designation USAN is applicable only to ...
United States Pharmacopeia
See Pharmacopeia.
United States Public Health Service
The agency responsible for the public health of the American people. The Public Health Service (PHS) administers a number of critically important health agencies including the ...
univalence, univalency
SYN: monovalence.
univalent
SYN: monovalent (1).
Universal Precautions
(in full, Universal Blood and Body Fluid Precautions). A set of procedural directives and guidelines published in August 1987 by the Centers for Disease Control and Prevention ...
unmedullated
SYN: unmyelinated.
unmyelinated
Denoting nerve fibers (axons) lacking a myelin sheath. SYN: amyelinated, amyelinic, nonmedullated, nonmyelinated, unmedullated.
Unna
Paul G., German dermatologist and staining expert, 1850–1929. See U. disease, U. nevus, U. stain, U.- Pappenheim stain, U.- Taenzer stain, U.-Thost syndrome.
unofficial
Denoting a drug that is not listed in the United States Pharmacopeia or the National Formulary.
UNOS
Acronym for the United Network for Organ Sharing, the nationwide umbrella for transplantation organ sharing in the U.S. UNOS states that it is "a private, not-for-profit, ...
unphysiologic
Pertaining to conditions in the organism which are abnormal; can be used to refer to subjecting the body to abnormal amounts of substances normally present.
Unresectable
Unable to be surgically removed (resected).
unsanitary
SYN: insanitary.
unsaturated
1. Not saturated; denoting a solution in which the solvent is capable of dissolving more of the solute. 2. Denoting a chemical compound in which all the affinities are not ...
unsex
To castrate; to deprive of the gonads.
Unstable diabetes
A type of diabetes when a person's blood glucose (sugar) level often swings quickly from high to low and from low to high. Also called "brittle diabetes" or " labile diabetes."
Unsteadiness
Loss of one’s equilibrium in regard to the environment, often with a feeling of almost falling, or the result of bumping into things. There are many causes for unsteadiness, ...
unstriated
Without striations; not striped; denoting the structure of the smooth or involuntary muscles.
unthrifty
In animals, denoting a failure to grow or develop normally as a result of disease.
Unverricht
Heinrich, German physician, 1853–1912. See U. disease.
Unwell
Not well or in good health, ailing, sick, indisposed. For example, "I am well-nigh choked with the sulfurous heat of the weather — or I am unwell." (1826, Journal of Sir Walter ...
up-regulation
Opposite of down-regulation.
UPJ
Abbreviation for ureteropelvic junction.
Upper GI series
: A series of x-rays of the esophagus, stomach, and small intestine (upper gastrointestinal, or GI, tract) that are taken after the patient drinks a barium solution. (Barium is a ...
Upper leg
The upper leg is the superior (top) segment of the leg: the part above the knee. As compared to the lower leg which boasts two bones (the tibia and the fibula), the upper leg has ...
Upper respiratory infection
An infection of the upper part of the respiratory system which is above the lungs. An upper respiratory infection can be due to any number of viral or bacterial infections. These ...
upsiloid
SYN: hypsiloid.
upsilon
The 20th letter of the Greek alphabet, Ψ.
upstream
Refers to nucleic acid base sequences proceeding the opposite direction from expression.
uptake
The absorption by a tissue of some substance, food material, mineral, etc., and its permanent or temporary retention.
ur-defenses
A rarely used term for primitive defenses. [Ger. ur-, primitive, earliest, + defenses]
Ura
Abbreviation for uracil.
urachal
Relating to the urachus.
Urachus
A canal connecting the bladder of the fetus with the allantois, a structure that contributes to the formation of the umbilical cord. The lumen (inside) of the urachus is ...
uracil
2,4-Dioxopyrimidine; a pyrimidine (base) present in ribonucleic acid. - u. dehydrogenase an oxidoreductase catalyzing oxidation of u. to barbituric acid; also oxidizes ...
Uracil (U)
A nucleotide base and one member of the A-U (adenine-uracil) base pair in RNA. The other base pair in RNA is G-C (guanine-cytosine). Uracil takes the place in RNA that thymine ...
uracil-6-carboxylic acid
SYN: orotic acid.
Uragoga
A genus of tropical plants (family Rubiaceae). U. ipecacuanha (Cephaelis ipecacuanha) is the source of Rio or Brazilian ipecac; U. acuminata (C. acuminata) is the source of ...
uramustine
SYN: uracil mustard.
uranin
SYN: fluorescein sodium.
uraninite
SYN: pitchblende.
uranisco-
See urano-.
uraniscochasm
SYN: uranoschisis. [ uranisco- + G. chasma, cleft]
uranisconitis
SYN: palatitis.
uraniscoplasty
SYN: palatoplasty. [ uranisco- + G. plasso, to form]
uraniscorrhaphy
SYN: palatorrhaphy. [ uranisco- + G. rhaphe, suture]
uraniscus
SYN: palate. [G. ouraniskos, roof of the mouth, dim. of ouranos, sky]
uranium
A radioactive metallic element, atomic no. 92, atomic wt. 238.0289, occurring mainly in pitchblende and notable for its two isotopes: 238U and 235U (99.2745% and 0.720%, ...
urano-, uranisco-
The hard palate. [G. ouranos, sky vault, ouraniskos, roof of mouth (palate)]
uranoplasty
SYN: palatoplasty.
uranorrhaphy
SYN: palatorrhaphy. [urano- + G. rhaphe, suture]
uranoschisis
Cleft of the hard palate. SYN: uraniscochasm. [urano- + G. schisis, fissure]
uranostaphyloplasty
Repair of a cleft of both hard and soft palates. SYN: uranostaphylorrhaphy. [urano- + G. staphyle, uvula, + plasso, to form]
uranostaphylorrhaphy
SYN: uranostaphyloplasty.
uranostaphyloschisis
Cleft of the soft and hard palates. SYN: uranoveloschisis. [urano- + G. staphyle, uvula, + schisis, fissure]
uranoveloschisis
SYN: uranostaphyloschisis.
uranyl
The ion, UO22+, usually found in such salts as u. nitrate, UO2(NO3)2; u. acetate, UO2(CH3COO)2, is used in electron microscopy.
urapidil
An antihypertensive agent which acts by influencing serotonin receptors.
uraroma
An obsolete term to describe a spicy, aromatic odor of the urine. [G. ouron, urine, + aroma, spice]
urarthritis
Gouty inflammation of a joint. [urate + arthritis]
Urate
A salt derived from uric acid. When the body cannot metabolize uric acid properly, urates can build up in body tissues or crystallize within the joints. See also gout, uric ...
uratemia
The presence of urates, especially sodium urate, in the blood. [urate + G. haima, blood]
urateribonucleotide phosphorylase
A ribosyltransferase that reacts urate d-ribonucleotide with orthophosphate to produce urate plus d-ribose 1-phosphate.
uratic
Pertaining to a urate or to urates.
uratolysis
The decomposition or solution of urates. [urate + G. lysis, solution]
uratolytic
Causing the decomposition, or solution and removal of urates, from the tissues.
uratoma
SYN: gouty tophus. [urate + G. -oma, tumor]
uratosis
Any morbid condition due to the presence of urates in the blood or tissues.
uraturia
The passage of an increased amount of urates in the urine. [urate + G. ouron, urine]
Urbach
Erich, U.S. dermatologist, 1893–1946. See U.-Wiethe disease.
Urban
Jerome A., U.S. surgeon, *1914. See U. operation.
Urban typhus of Malaya
Murine typhus, an acute infectious disease with fever, headache, and rash, all quite similar to, but milder than, epidemic typhus. It is caused by a related microorganism, ...
urceiform
Pitcher-shaped. SYN: urceolate. [L. urceus, pitcher, + forma, form]
urceolate
SYN: urceiform. [L. urceolus, dim. of urceus, pitcher]
Urd
Abbreviation for uridine.
ure-, urea-, ureo-
Urea; urine. SEE ALSO: urin-, uro-. [G. ouron, urine]
Urea
A nitrogen-containing substance normally cleared from the blood by the kidney into the urine. Diseases that compromise the function of the kidney often lead to increased blood ...
Urea breath test (UBT)
The urea breath test (UBT) is a procedure for diagnosing the presence of a bacterium, Helicobacter pylori (H. pylori) that causes inflammation, ulcers, and atrophy of the ...
ureagenesis
Formation of urea, usually referring to the metabolism of amino acid s to urea. SYN: ureapoiesis. [urea + G. genesis, production]
ureal
Relating to or containing urea. SYN: ureic.
Ureaplasma
A genus of microaerophilic to anaerobic, nonmotile bacteria (family Mycoplasmataceae) with no cell walls. Gram-negative, they are predominantly coccoidal to coccobacillary ...
ureapoiesis
SYN: ureagenesis. [urea + G. poiesis, a making]
urease
An enzyme that catalyzes the hydrolysis of urea to carbon dioxide and ammonia; used as an antitumor enzyme; it is present in intestinal bacteria and accounts for most of the ...
uredema
Edema due to infiltration of urine into the subcutaneous tissues. [G. ouron, urine, + oidema, swelling]
ureic
SYN: ureal.
ureide
Any compound of urea in which one or more of its hydrogen atoms have been substituted by acid radicals.

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