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Uranology

A discourse or treatise on the heavens and the heavenly bodies; the study of the heavens; uranography.

Uranometry

A chart or catalogue of fixed stars, especially of stars visible to the naked eye.

Uranoplasty

The plastic operation for closing a fissure in the hard palate.

Uranoscopy

Observation of the heavens or heavenly bodies.

Uranoso-

A combining form (also used adjectively) from uranium; -- used in naming certain complex compounds; as in uranoso-uranic oxide, uranoso-uranic sulphate.

Uranous

Pertaining to, or containing, uranium; designating those compounds in which uranium has a lower valence as contrasted with the uranic compounds.

Uranyl

The radical UO2, conveniently regarded as a residue of many uranium compounds.

Urate

A salt of uric acid; as, sodium urate; ammonium urate.

Urbane

Courteous in manners; polite; refined; elegant.

Urbaniste

A large and delicious pear or Flemish origin.

Urbanize

To render urban, or urbane; to refine; to polish.

Urbicolae

An extensive family of butterflies (Hesperidae), including those known as skippers.

Urceolate

Shaped like a pitcher or urn; swelling below, and contracted at the orifice, as a calyx or corolla.

Urceole

A vessel for water for washing the hands; also, one to hold wine or water.

Urceolus

Any urn-shaped organ of a plant.

Urchin

Rough; pricking; piercing.

Urchon

The urchin, or hedgehog.

Urdu

The language more generally called Hindustanee.

Ure

To use; to exercise; to inure; to accustom by practice.

Urea

A very soluble crystalline body which is the chief constituent of the urine in mammals and some other animals. It is also present in small quantity in blood, serous fluids, lymph, the liver, etc.

Ureal

Of or pertaining to urea; containing, or consisting of, urea; as, ureal deposits.

Ureameter

An apparatus for the determination of the amount of urea in urine, in which the nitrogen evolved by the action of certain reagents, on a given volume of urine, is collected and measured, and the urea calculated accordingly.

Urechitin

A glucoside extracted from the leaves of a certain plant (Urechitis suberecta) as a bitter white crystalline substance.

Urechitoxin

A poisonous glucoside found accompanying urechitin, and extracted as a bitter white crystalline substance.

Uredinales

An order of fungi of the phylum Basidiomycota, comprising the rust fungi.

Uredospore

The thin-walled summer spore which is produced during the so-called Uredo stage of certain rusts. See (in the Supplement) Uredinales, Heter/cious, etc.

Ureide

Any one of the many complex derivatives of urea; thus, hydantoin, and, in an extended dense, guanidine, caffeine, et., are ureides.

Ureter

The duct which conveys the urine from the kidney to the bladder or cloaca. There are two ureters, one for each kidney.

Urethane

A white crystalline substance, NH2.CO.OC2H5, produced by the action of ammonia on ethyl carbonate or by heating urea nitrate and ethyl alcohol. It is used as a hypnotic, antipyretic, and antispasmodic. Hence, any ester of carbamic acid.

Urethra

The canal by which the urine is conducted from the bladder and discharged.

Urethral

Of or pertaining to the urethra.

Urethroplasty

An operation for the repair of an injury or a defect in the walls of the urethra.

Urethroscope

An instrument for viewing the interior of the urethra.

Urethroscopy

Examination of the urethra by means of the urethroscope.

Urethrotome

An instrument for cutting a urethral stricture.

Urethrotomy

An incision of the urethra, esp. incision for relief of urethral stricture.

Uretic

Of or pertaining to the urine; diuretic; urinary; as, uretic medicine.

Urge

To press onward or forward.

Urgency

The quality or condition of being urgent; insistence; pressure; as, the urgency of a demand or an occasion.

Urgent

Urging; pressing; besetting; plying, with importunity; calling for immediate attention; instantly important.

Uric

Of or pertaining to urine; obtained from urine; as, uric acid.

Urim

A part or decoration of the breastplate of the high priest among the ancient Jews, by which Jehovah revealed his will on certain occasions. Its nature has been the subject of conflicting conjectures.

Urinarium

A reservoir for urine, etc., for manure.

Urinary

A urinarium; also, a urinal.

Urinate

To discharge urine; to make water.

Urination

The act or process of voiding urine; micturition.

Urinative

Provoking the flow of urine; uretic; diuretic.

Urinator

One who dives under water in search of something, as for pearls; a diver.

Uriniferous

Bearing or conveying urine; as, uriniferous tubules.

Uriniparous

Producing or preparing urine; as, the uriniparous tubes in the cortical portion of the kidney.

Urinogenital

Pertaining to the urinary and genital organs; genitourinary; urogenital; as, the urinogenital canal.

Urinometer

A small hydrometer for determining the specific gravity of urine.

Urinometry

The estimation of the specific gravity of urine by the urinometer.

Urinous Urinose

Of or pertaining to urine, or partaking of its qualities; having the character or odor of urine; similar to urine.

Urite

One of the segments of the abdomen or post-abdomen of arthropods.

Urith

The bindings of a hedge.

Urn

To inclose in, or as in, an urn; to inurn.

Urn-shaped

Having the shape of an urn; as, the urn-shaped capsules of some mosses.

Urnal

Of or pertaining to an urn; effected by an urn or urns.

Urnful

As much as an urn will hold; enough to fill an urn.

Urobilin

A yellow pigment identical with hydrobilirubin, abundant in the highly colored urine of fever, and also present in normal urine. See Urochrome.

Urocele

A morbid swelling of the scrotum due to extravasation of urine into it.

Urocerata

A division of boring Hymenoptera, including Tremex and allied genera. See Illust. of Horntail.

Urochord

The central axis or cord in the tail of larval ascidians and of certain adult tunicates.

Urochrome

A yellow urinary pigment, considered by Thudichum as the only pigment present in normal urine. It is regarded by Maly as identical with urobilin.

Urodela

An order of amphibians having the tail well developed and often long. It comprises the salamanders, tritons, and allied animals.

Urodelian

Of or pertaining to the Urodela. One of the Urodela.

Uroerythrin

A reddish urinary pigment, considered as the substance which gives to the urine of rheumatism its characteristic color. It also causes the red color often seen in deposits of urates.

Urogastric

Behind the stomach; -- said of two lobes of the carapace of certain crustaceans.

Uroglaucin

A body identical with indigo blue, occasionally found in the urine in degeneration of the kidneys. It is readily formed by oxidation or decomposition of indican.

Urohaematin

Urinary haematin; -- applied to the normal coloring matter of the urine, on the supposition that it is formed either directly or indirectly (through bilirubin) from the haematin of the blood. See Urochrome, and Urobilin.

Urohyal

Of or pertaining to one or more median and posterior elements in the hyoidean arch of fishes. A urohyal bone or cartilage.

Uromere

Any one of the abdominal segments of an arthropod.

Uronology

That part of medicine which treats of urine.

Uropod

Any one of the abdominal appendages of a crustacean, especially one of the posterior ones, which are often larger than the rest, and different in structure, and are used chiefly in locomotion. See Illust. of Crustacea, and Stomapoda.

Uropygial

Of or pertaining to the uropygium, or prominence at the base of the tail feathers, in birds.

Uropygium

The prominence at the posterior extremity of a bird's body, which supports the feathers of the tail; the rump; -- sometimes called pope's nose.

Urosacral

Of or pertaining to both the caudal and sacral parts of the vertebral column; as, the urosacral vertebrae of birds.

Uroscopy

The diagnosis of diseases by inspection of urine.

Urosome

The abdomen, or post-abdomen, of arthropods.

Urostege

One of the plates on the under side of the tail of a serpent.

Urosteon

A median ossification back of the lophosteon in the sternum of some birds.

Urosternite

The sternal, or under piece, of any one of the uromeres of insects and other arthropods.

Urostyle

A styliform process forming the posterior extremity of the vertebral column in some fishes and amphibians.

Uroxanic

Pertaining to, or designating, an acid, C5H8N4O6, which is obtained, as a white crystalline substance, by the slow oxidation of uric acid in alkaline solution.

Urrhodin

Indigo red, a product of the decomposition, or oxidation, of indican. It is sometimes found in the sediment of pathological urines. It is soluble in ether or alcohol, giving the solution a beautiful red color. Also called indigrubin.

Urry

A sort of blue or black clay lying near a vein of coal.

Ursa

Either one of the Bears. See the Phrases below.

Ursal

The ursine seal. See the Note under 1st Seal.

Ursine

Of or pertaining to a bear; resembling a bear.

Urson

The Canada porcupine. See Porcupine.

Ursula

A beautiful North American butterfly (Basilarchia astyanax syn. Limenitis astyanax). Its wings are nearly black with red and blue spots and blotches. Called also red-spotted purple.

Ursuline

Of or pertaining to St. Ursula, or the order of Ursulines; as, the Ursuline nuns.

Ursus

A genus of Carnivora including the common bears.

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