Word origins

• tylo-Relating to callused and swollen things.
• tympaniticOf, pertaining to, or suffering from, tympany.
• TyphoeanOf or relating to Typhon (also called Typhoeus), a hundred-headed giant in Ancient Greek mythology.
• Tyrannosaurus reginaA female Tyrannosaurus rex.
• tyrocinyThe condition of being a tyro or beginner; apprenticeship.
• ubacThe shady side of a mountain; in the northern hemisphere, this is typically the north-facing slope.
• uberousFruitful.
• ubicitywhereabouts, location
• ubietyThe state of existing in a specific point in space, thereness.
• ubiquiterA microorganism that can be found in most types of environment.
• ubiquitismThe belief that the human nature of Christ is omnipresent.
• ubiquitistOne who is always to be found (within a certain context).
• UcalegonA neighbor whose house is on fire or has burned down.
• udometerA rain gauge.
• udometricRelating to udometry.
• udometryrainfall measurement
• ulcuscleA small ulcer.
• ulcusculeA little ulcer.
• uliginousSlimy.
• ulmicPertaining to ulmin; designating an acid obtained from ulmin.
• ulminA brown amorphous substance found in decaying vegetation.
• ultima thuleA place beyond the borders of the known world.
• ultimityThe final stage or consequence; finality.
• ultisolA soil that has a weathered clay horizon as a result of argilluviation.
• ultramundaneextraordinary; abnormal
• ultroneityThe quality of being ultroneous.
• ultroneousspontaneous; voluntary
• ululantHowling; wailing.
• ululatoryBeing or relating to a ululation.
• umbellicumbellar
• umbraculiferousBearing something like an open umbrella.
• umbraculiformHaving the form of something that offers shade, such as a treetop or especially an umbrella.
• umbramancyMagical control over shadows.
• umbrateTo shade; to shadow.
• umbratileShady, shadowy.
• umbratilousShadowy; faint; secluded; indistinct; vague; latent; indeterminate.
• UmbrielA moon of Uranus
• umbriferousproviding or making shade; umbrageous.
• unalistA churchman who holds only one benefice.
• unciformOf the shape of a hook; hook-shaped.
• uncinateHooked at the end.
• uncinusA cloud species which consists of fine hair-like strands, with hooked terminations. Associated only with cirrus formations.
• uncousCurved or hook-shaped.
• uncultNot cultivated; rude; illiterate.
• undateundated; rising and falling in waves
• undeca-eleven
• undecetA group of eleven musicians; a piece of music written for such a group
• undecimarticulateHaving eleven joints.
• UndecimberA fictitious thirteenth month of the Western calendar.
• undecimvirateA group of eleven people, especially (politics) a council of eleven men sharing office or power and particularly (historical) the groups of eleven magistrates in ancient Athens.
• undenaryIn base (radix) eleven.
• ungiectomyThe surgical removal of a fingernail or toenail.
• ungualPertaining to or resembling a creature's nail, claw or hoof; unguinal.
• unguentaryLike, or containing, an unguent.
• unguicalungual
• unguicularOf or pertaining to a claw or nail; ungual.
• unguiferousProducing, having, or supporting nails or claws.
• unguinousConsisting of, or resembling, fat or oil; unctuous; oleaginous.
• unguledHaving hoofs of a tincture different from the body.
• unguligradeThat walks on hooves.
• uni-one, single
• unigenitureThe state of being the sole begotten.
• unigenousOf a single type, or genus.
• UnilinguaFormer name of Mirad, an international auxiliary language created by Noubar Agopoff in 1966.
• UniversalglotAn a posteriori international auxiliary language created in 1868 by Jean Pirro.
• unprobablyimprobably
• unviolateSynonym of inviolate.
• upupaA hoopoe.
• uraeusA representation of the sacred asp, symbolising supreme power in ancient Egypt.
• urceolateShaped like an urn.
• urceoleA vessel for water or washing the hands in Roman Catholicism.
• uredineousRelating to the uredo.
• uredinousRelating to the uredo.
• -uret-ide.
• urinantOf a fish: oriented vertically, with the head to base and tail to chief, as if diving.
• urinariumA pit used for storing urine, which may be later used to make manure.
• urocanicOf or pertaining to urocanic acid or its derivatives
• urocanic acidAn intermediate in the catabolism of L-histidine, transformed in the liver by urocanate hydratase (or urocanase) into 4-imidazolone-5-propionic acid and subsequently to glutamic acid.
• uroglaucinA substance, apparently the same as indigo, occasionally found in the urine in degeneration of the kidneys. It is readily formed by oxidation or decomposition of indican.
• ursidAny species of the family Ursidae; a bear, a giant panda, or any of certain extinct relatives.
• ursiformShaped like a bear.
• urticateTo have or produce a stinging sensation, as of nettles or urticating hair.
• urticationThe development of urticaria (hives).
• usitativeDenoting usual or customary action.
• usticIntermediate between aridic and udic.
• ustionThe act of burning, or the state of being burned.
• usucapionThe acquisition of right or title to an object by means of the passage of time. The common law analogue is adverse possession.
• usuraryUsurious.
• usurpantUsurping; encroaching.
• utero-Uterus; uterine.
• utinamA fervent wish.
• utraquismThe moderate Hussite ideology that the faithful, specifically including laity, should receive Communion under both kinds (sub utraque specie), that is to say, receive both bread and wine during the Eucharist; moderate Hussitism.
• utriculoidResembling a bladder .
• utriformShaped like a bag or leather bottle.
• uva ursiThe bearberry.
• uvic acidRacemic acid, a particular stereoisomer of tartaric acid.
• uxorialOf or pertaining to a wife, or her genes or relatives.
• uxorophobiaAn inordinate fear of one's own wife, or of wives.
• v.See. vide(te)
• vacci-cow