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Upstir

Insurrection; commotion; disturbance.

Upstream

Toward the higher part of a stream; against the current.

Upstreet

Toward the higher part of a street; as, to walk upstreet.

Upstroke

An upward stroke, especially the stroke, or line, made by a writing instrument when moving upward, or from the body of the writer, or a line corresponding to the part of a letter thus made.

Upsun

The time during which the sun is up, or above the horizon; the time between sunrise and sunset.

Upswarm

To rise, or cause to rise, in a swarm or swarms.

Upsway

To sway or swing aloft; as, to upsway a club.

Uptake

To take into the hand; to take up; to help.

Uptown

Situated in, or belonging to, the upper part of a town or city; as, a uptown street, shop, etc.; uptown society.

Upturn

To turn up; to direct upward; to throw up; as, to upturn the ground in plowing.

Upupa

A genus of birds which includes the common hoopoe.

Upward

The upper part; the top.

Upwhirl

To rise upward in a whirl; to raise upward with a whirling motion.

upwind

being or moving in the direction from which the wind is blowing.

Upwreath

To rise with a curling motion; to curl upward, as smoke.

Urachus

A cord or band of fibrous tissue extending from the bladder to the umbilicus.

Uraemia

Accumulation in the blood of the principles of the urine, producing dangerous disease.

Uraemic

Of or pertaining to uraemia; as, uraemic convulsions.

Uraeum

The posterior half of an animal.

Uraeus

A serpent, or serpent's head and neck, represented on the front of the headdresses of divinities and sovereigns as an emblem of supreme power.

Ural

Pertaining to, or designating, the Urals, a mountain range between Europe and Asia.

Ural-Altaic

Of or pertaining to the Urals and the Altai; as the Ural-Altaic, or Turanian, languages.

Uralite

Amphibole resulting from the alternation of pyroxene by paramorphism. It is not uncommon in massive eruptive rocks.

Uralitization

The change of pyroxene to amphibole by paramorphism.

Uran-ochre Uran-ocher

A yellow, earthy incrustation, consisting essentially of the oxide of uranium, but more or less impure.

Uranian

Of or pertaining to the planet Uranus; as, the Uranian year.

Uranic

Of or pertaining to the heavens; celestial; astronomical.

Uranin

An alkaline salt of fluorescein, obtained as a brownish red substance, which is used as a dye; -- so called from the peculiar yellowish green fluorescence (resembling that of uranium glass) of its solutions. See Fluorescein.

Uraninite

A mineral consisting chiefly of uranium oxide with some lead, thorium, etc., occurring in black octahedrons, also in masses with a pitchlike luster; pitchblende.

Uranite

A general term for the uranium phosphates, autunite, or lime uranite, and torbernite, or copper uranite.

Uranitic

Of or pertaining to uranium; containing uranium.

Uranium

An element of the chromium group, found in certain rare minerals, as pitchblende, uranite, etc., and reduced as a heavy, hard, nickel-white metal which is quite permanent. Its yellow oxide is used to impart to glass a delicate greenish-yellow tint which is accompanied by a strong fluorescence, and its black oxide is used as a pigment in porcelain painting. Symbol U. Atomic weight 239. --radioactive, U-235 isotope is used in atomic fission, in bombs or power plants -->

Uranography

A description or plan of the heavens and the heavenly bodies; the construction of celestial maps, globes, etc.; uranology.

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.

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