Word origins

• ThesmophoriaAn Ancient Greek festival in honour of Demeter and Persephone, and involving the sacrifice of pigs.
• thetesThe lowest social class of citizens in ancient Athens.
• -theticPlaced, positioned, or located in a manner or place (indicated by the first element).
• theticalLaid down; absolute or positive, like a law or constituting the truth.
• thiasusA group of singers and dancers assembled to celebrate the festival of one of the gods.
• thief in the nightSomething stealthy or that occurs without warning.
• thinolitea pseudomorph of ikaite, found in Quaternary lake basins of Nevada.
• thio-containing sulfur, especially a compound in which oxygen has been replaced by this element
• thionineAn artificial red or violet dyestuff consisting of a complex sulfur derivative of certain aromatic diamines.
• thnetopsychismThe doctrine that when the body dies, the intangible soul and/or spirit also goes to sleep or in other words the person's consciousness ceases until the resurrection, and that the soul and/or spirit must be awoken and both are to be called back to life at the Day of Judgement. This was first recorded as taught by the Thnētopsȳchītæ, a third century sect of Christianity in Arabia, and is based on 1 Timothy 6:16, an epistolary doxology addressed to the God who alone has immortality.
• thooidOf or relating to an obsolete group of carnivores, including wolves and dogs.
• thraniteOne of the rowers on the topmost of the three benches in a trireme. They were usually the best rowers.
• thremmatologyThe field of breeding or propagating plants and animals.
• threneticRelating to a threne
• threnodeA dirge or funeral song.
• threpsologyThe study of nutrition.
• thriambusA hymn to Dionysus, sung in processions in his honour.
• thrombo-thrombus
• thurisFrankincense obtained from conifers such as the Norway spruce, or long-leaved pine.
• thymosThat area of the soul where feelings of pride, indignation, shame etc are located.
• thyrohyalOne of the lower segments in the hyoid arch, often consolidated with the body of the hyoid bone and forming one of its great horns, as in humans.
• tichorrhineHaving a vertical bony medial septum supporting the nose.
• TitanomachyAny fight between two great forces.
• titanotheriumSynonym of brontotheriid.
• TitarevA transliteration of the Russian surname Титарёв (Titarjóv).
• toco-Relating to childbirth.
• tocogeneticPertaining to the evolutionary process in which the higher terms are generated by the lower through creative synthesis.
• tocologyThe branch of medicine that deals with childbirth.
• tokogeneticOf or concerning the relationships between individuals in a species.
• -tomeAn instrument for cutting.
• tomomaniaA morbid addiction to performing or undergoing surgery.
• -tomyA division.
• tono-Tonus: muscle tone, or tension in an organ.
• tonophantA modification of the kaleidophone, for showing the composition of acoustic vibrations. It consists of two thin slips of steel welded together, their length being adjustable by a screw socket.
• toparchThe prince or ruler of a small district, city, or petty state; a petty "king".
• topazoliteA yellowish form of andradite
• -topeplace, area or region
• -topiaPlace; position; location; geographic region.
• topo-place, area or region
• topobathyunderwater topography; bathymetry.
• toreuticRelating to toreutics.
• toreuticsThe art of making relief or intaglio designs, especially by chasing, carving or embossing in metal
• toxophilitePertaining to archery.
• toxotesAny fish of genus Toxotes, the archerfishes.
• trachelo-neck (structure connecting the head to the thorax)
• trachybasaltA volcanic rock with a composition between trachyte and basalt.
• trachyphoniahoarseness of the voice
• tragalismlustfulness
• tragomaschaliaA condition characterized by the smell of goats in the armpits, excessively stinky armpits.
• trapeziteA banker or money changer in Ancient Greece
• traulismA stammering or stuttering.
• trechometerodometer
• trepopneaDyspnea that is sensed while lying on one side but not on the other.
• triadelphousHaving its stamens fused together at least partly by the filaments so that they form three separate groups, some of which may contain a lone stamen.
• triakis octahedronA Catalan solid with 24 isosceles triangle faces, 36 edges and 14 vertices, being the dual of the truncated cube.
• tribo-friction
• tribosphenicDescribing the original placental molars that have a talonid in the lower molar teeth, where the protocone of the upper teeth hits. Definied by George Gaylord Simpson in 1936.
• tribrachA metrical foot consisting of three short syllables.
• tricerionA candlestick with three lights, signifying the Trinity.
• trichinaAny of several parasitic roundworms, of the genus Trichinella, that infect the intestines and cause trichinosis
• tricho-Forming words related to hair.
• trichoclasisA brittle condition of the hair.
• trichodragmaA sheaf or bundle of raphides.
• trichoepitheliomaA neoplasm of the adnexa of the skin
• trichogyneThe slender, hair-like cell which receives the fertilizing particles, or antherozoids, in female red algae, lichens and fungi.
• trichomaIngrown eyelash; trichiasis.
• trichomatoseAffected with trichoma (plica).
• trichoschisistrichoclasis, especially where the cuticle is locally absent at the site of fracture
• trichromacyThe quality of having three independent channels for conveying color information in the eye.
• tridactylHaving three digits on a limb.
• trietericSynonym of triennal (“related to or characterized by an three-year period”)
• triglyphA vertically channeled tablet of the Doric frieze.
• trigoneuticHaving three broods per season.
• trikirionA liturgical candlestick holding three candles, used in the Eastern Orthodox and Eastern Catholic Churches.
• trilabeA three-pronged surgical instrument for removing calculi from the bladder.
• trilithonA structure consisting of two stone pillars supporting a horizontal stone.
• trimerousOrganized in threes; having parts in numbers that are multiples of three.
• trinacriformHaving three prongs or sharp points.
• triphthongA monosyllabic vowel combination usually involving a quick but smooth movement from one vowel to another that passes over a third one.
• tripodyThree metrical feet taken together, or included in one measure.
• -tripsyUsed to form nouns referring to a surgical procedure involving the crushing, breaking, rubbing, or pulverization of a substance (especially a calculus or stone).
• triptonThe inorganic particulate matter suspended in bodies of water such as lakes and seas.
• tris legomenonA word occurring only three times in a given corpus.
• trispastA machine with three pulleys which act together to raise great weights.
• tritideA hydride using tritium.
• tritrophicDescribing a parasite that feeds on another parasite that feeds on a third parasite.
• trittysA subdivision of ancient Attica
• troadThe Biga peninsula in the northwestern part of Anatolia, Turkey.
• trochalResembling a wheel.
• trochilicOf or pertaining to rotary motion or to wheels
• trochilicsThe science of rotary motion, or work done with wheels.
• trochoidThe curve traced by a point on a circle as it rolls along a straight line
• troglo-cave
• trogloxeneAny organism which sporadically lives in underground habitats such as caves, and cannot live there exclusively.
• tromometerAn instrument for measuring slight earthquake shocks.
• tropaionAn ancient Greek or Roman monument set up to commemorate a victory over foes, and typically shaped like a tree, sometimes with a pair of arm-like branches.
• -trophForming nouns denoting members of classes of organisms distinguished by trophic modes.
• -trophicUsed to form adjectives corresponding to nouns ending in -trophy
• trophospermThe placenta.
• -trophynutrition