| saturnalia | (noun) a wild gathering involving excessive drinking and promiscuity | Synonyms: bacchanal, bacchanalia, debauch, debauchery, drunken revelry, orgy, riot |
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| schizophrenia | (noun) any of several psychotic disorders characterized by distortions of reality and disturbances of thought and language and withdrawal from social contact | Synonyms: dementia praecox, schizophrenic disorder, schizophrenic psychosis |
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| schizothymia | (noun) resembling schizophrenia but remaining within the bounds of normality | - |
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| scholia | (noun) a marginal note written by a scholiast (a commentator on ancient or classical literature) | Synonyms: scholium |
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| sclerotinia | (noun) any fungus of the genus Sclerotinia; some causing brown rot diseases in plants | - |
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| scoria | (noun) the scum formed by oxidation at the surface of molten metals | Synonyms: dross, slag |
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| sepia | (noun) a shade of brown with a tinge of red | Synonyms: burnt sienna, mahogany, reddish brown, Venetian red |
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| (noun) rich brown pigment prepared from the ink of cuttlefishes | - |
| septicaemia | (noun) invasion of the bloodstream by virulent microorganisms from a focus of infection | Synonyms: blood poisoning, septicemia |
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| septicemia | (noun) invasion of the bloodstream by virulent microorganisms from a focus of infection | Synonyms: blood poisoning, septicaemia |
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| sequoia | (noun) either of two huge coniferous California trees that reach a height of 300 feet; sometimes placed in the Taxodiaceae | Synonyms: redwood |
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| (noun) wood of either of two huge coniferous California trees that reach a height of 300 feet; sometimes placed in the Taxodiaceae | Synonyms: redwood |
| sesbania | (noun) any of various plants of the genus Sesbania having pinnate leaves and large showy pea-like flowers | - |
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| sesquipedalia | (noun) a very long word (a foot and a half long) | Synonyms: sesquipedalian |
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| sharia | (noun) the code of law derived from the Koran and from the teachings and example of Mohammed | Synonyms: Islamic law, sharia law, shariah, shariah law |
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| shortia | (noun) any plant of the genus Shortia; evergreen perennial herbs with smooth leathery basal leaves and showy white solitary flowers | - |
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| sideropenia | (noun) a deficiency of iron; results from inadequate iron in the diet or from hemorrhage | - |
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| silesia | (noun) a sturdy twill-weave cotton fabric; used for pockets and linings | - |
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| sinopia | (noun) a red ocher formerly used as a pigment | Synonyms: sinoper, sinopis |
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| sobralia | (noun) any of various showy orchids of the genus Sobralia having leafy stems and bright-colored solitary or racemose flowers similar to those of genus Cattleya | - |
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| somaesthesia | (noun) the faculty of bodily perception; sensory systems associated with the body; includes skin senses and proprioception and the internal organs | Synonyms: somaesthesis, somataesthesis, somatesthesia, somatic sense, somatic sensory system, somatosensory system, somesthesia, somesthesis |
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| (noun) the perception of tactual or proprioceptive or gut sensations | Synonyms: somatesthesia, somatic sensation, somesthesia |
| somatesthesia | (noun) the faculty of bodily perception; sensory systems associated with the body; includes skin senses and proprioception and the internal organs | Synonyms: somaesthesia, somaesthesis, somataesthesis, somatic sense, somatic sensory system, somatosensory system, somesthesia, somesthesis |
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| (noun) the perception of tactual or proprioceptive or gut sensations | Synonyms: somaesthesia, somatic sensation, somesthesia |
| somesthesia | (noun) the faculty of bodily perception; sensory systems associated with the body; includes skin senses and proprioception and the internal organs | Synonyms: somaesthesia, somaesthesis, somataesthesis, somatesthesia, somatic sense, somatic sensory system, somatosensory system, somesthesis |
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| (noun) the perception of tactual or proprioceptive or gut sensations | Synonyms: somaesthesia, somatesthesia, somatic sensation |
| souvlakia | (noun) made of lamb | Synonyms: souvlaki |
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| squandermania | (noun) prodigious squandering (usually by a government) | - |
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| stapelia | (noun) any of various plants of the genus Stapelia having succulent leafless toothed stems resembling cacti and large foul-smelling (often star-shaped) flowers | Synonyms: carrion flower, starfish flower |
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| steatopygia | (noun) an extreme accumulation of fat on the buttocks | - |
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| sterculia | (noun) any tree of the genus Sterculia | - |
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| stevia | (noun) any plant of the genus Stevia or the closely related genus Piqueria having glutinous foliage and white or purplish flowers; Central and South America | - |
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| (noun) any plant of the genus Piqueria or the closely related genus Stevia | - |
| stria | (noun) a stripe or stripes of contrasting color | Synonyms: band, banding, striation |
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| (noun) any of a number of tiny parallel grooves such as: the scratches left by a glacier on rocks or the streaks or ridges in muscle tissue | Synonyms: striation |
| subtopia | (noun) monotonous urban sprawl of standardized buildings | - |
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| suburbia | (noun) suburbanites considered as a cultural class or subculture | - |
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| (noun) a residential district located on the outskirts of a city | Synonyms: suburb, suburban area |
| suksdorfia | (noun) any of several American plants of the genus Suksdorfia having orbicular to kidney-shaped somewhat succulent leaves and white or rose or violet flowers in terminal panicles | - |
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| superbia | (noun) unreasonable and inordinate self-esteem (personified as one of the deadly sins) | Synonyms: pride |
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| synaesthesia | (noun) a sensation that normally occurs in one sense modality occurs when another modality is stimulated | Synonyms: synesthesia |
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| synechia | (noun) adhesions between the iris and the lens or cornea resulting from trauma or eye surgery or as a complication of glaucoma or cataract; can lead to blindness | - |
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| synesthesia | (noun) a sensation that normally occurs in one sense modality occurs when another modality is stimulated | Synonyms: synaesthesia |
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| synovia | (noun) viscid lubricating fluid secreted by the membrane lining joints and tendon sheaths etc. | Synonyms: synovial fluid |
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| tachycardia | (noun) abnormally rapid heartbeat (over 100 beats per minute) | - |
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| taenia | (noun) tapeworms parasitic in humans which uses the pig as its intermediate host | - |
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| (noun) a narrow headband or strip of ribbon worn as a headband | Synonyms: fillet, tenia |
| talaria | (noun) a winged sandal (as worn by Hermes in Greco-Roman art) | - |
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| tannia | (noun) tropical American aroid having edible tubers that are cooked and eaten like yams or potatoes | Synonyms: malanga, spoonflower, Xanthosoma atrovirens, Xanthosoma sagittifolium, yautia |
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| taphephobia | (noun) a morbid fear of being buried alive | - |
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| technophilia | (noun) enthusiasm for new technology | - |
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| technophobia | (noun) dislike for new technology | - |
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| tenia | (noun) a narrow headband or strip of ribbon worn as a headband | Synonyms: fillet, taenia |
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| tetartanopia | (noun) a form of dichromacy characterized by lowered sensitivity to yellow light; so rare that its existence has been questioned | Synonyms: yellow-blindness |
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| thalassaemia | (noun) an inherited form of anemia caused by faulty synthesis of hemoglobin | Synonyms: Mediterranean anaemia, Mediterranean anemia, thalassemia |
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| thalassemia | (noun) an inherited form of anemia caused by faulty synthesis of hemoglobin | Synonyms: Mediterranean anaemia, Mediterranean anemia, thalassaemia |
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| thanatophobia | (noun) a morbid fear of death | - |
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| thermalgesia | (noun) pain caused by heat | - |
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| thiobacteria | (noun) any bacterium of the genus Thiobacillus | Synonyms: sulfur bacteria, sulphur bacteria |
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| thrombasthenia | (noun) a rare autosomal recessive disease in which the platelets do not produce clots in the normal way and hemorrhage results | - |
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| thrombocytopenia | (noun) a blood disease characterized by an abnormally small number of platelets in the blood | Synonyms: thrombopenia |
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| thrombopenia | (noun) a blood disease characterized by an abnormally small number of platelets in the blood | Synonyms: thrombocytopenia |
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| tibia | (noun) the inner and thicker of the two bones of the human leg between the knee and ankle | Synonyms: shin, shin bone, shinbone |
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| titania | (noun) a white powder used as a pigment for its high covering power and durability | Synonyms: titanic oxide, titanium dioxide, titanium oxide |
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| tithonia | (noun) any plant of the genus Tithonia; tall coarse herbs or shrubs of Mexico to Panama having large flower heads resembling sunflowers with yellow disc florets and golden-yellow to orange-scarlet rays | Synonyms: Mexican sunflower |
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| topognosia | (noun) recognition of the location of a stimulus on the skin | Synonyms: topognosis |
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| toxaemia | (noun) blood poisoning caused by bacterial toxic substances in the blood | Synonyms: toxemia |
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| (noun) an abnormal condition of pregnancy characterized by hypertension and edema and protein in the urine | Synonyms: toxaemia of pregnancy, toxemia, toxemia of pregnancy |
| toxemia | (noun) blood poisoning caused by bacterial toxic substances in the blood | Synonyms: toxaemia |
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| (noun) an abnormal condition of pregnancy characterized by hypertension and edema and protein in the urine | Synonyms: toxaemia, toxaemia of pregnancy, toxemia of pregnancy |
| traumatophobia | (noun) a morbid fear of battle or physical injury | - |
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| trichotillomania | (noun) an irresistible urge to pull out your own hair | - |
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| triskaidekaphobia | (noun) a morbid fear of the number 13 | - |
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| tritanopia | (noun) rare form of dichromacy characterized by a lowered sensitivity to blue light resulting in an inability to distinguish blue and yellow | Synonyms: blue-blindness |
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| trivia | (noun) something of small importance | Synonyms: small beer, trifle, triviality |
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| tularaemia | (noun) a highly infectious disease of rodents (especially rabbits and squirrels) and sometimes transmitted to humans by ticks or flies or by handling infected animals | Synonyms: deer fly fever, rabbit fever, tularemia, yatobyo |
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| tularemia | (noun) a highly infectious disease of rodents (especially rabbits and squirrels) and sometimes transmitted to humans by ticks or flies or by handling infected animals | Synonyms: deer fly fever, rabbit fever, tularaemia, yatobyo |
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| tyrosinemia | (noun) autosomal recessive defect in tyrosine metabolism resulting in liver and kidney disturbances and mental retardation | - |
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| ulalgia | (noun) pain in the gums | - |
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| ulatrophia | (noun) recession of the gums | - |
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| ulemorrhagia | (noun) bleeding of the gums | - |
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| uraemia | (noun) accumulation in the blood of nitrogenous waste products (urea) that are usually excreted in the urine | Synonyms: azotaemia, azotemia, uremia |
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| uratemia | (noun) presence of abnormal amounts of uric acid salts in the blood; symptom of gout | - |
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| uraturia | (noun) presence of abnormally large amounts of uric acid in the urine; symptom of gout | - |
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| uremia | (noun) accumulation in the blood of nitrogenous waste products (urea) that are usually excreted in the urine | Synonyms: azotaemia, azotemia, uraemia |
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| uricaciduria | (noun) presence of abnormal amounts of uric acid in the urine; symptom of gout | - |
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| urochesia | (noun) passage of urine from the anus | Synonyms: urochezia |
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| urochezia | (noun) passage of urine from the anus | Synonyms: urochesia |
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| urodynia | (noun) pain during urination | - |
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| ursinia | (noun) any of various plants of the genus Ursinia grown for their yellow- or orange- or white-rayed flowers | - |
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| urticaria | (noun) an itchy skin eruption characterized by weals with pale interiors and well-defined red margins; usually the result of an allergic response to insect bites or food or drugs | Synonyms: hives, nettle rash, urtication |
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| utopia | (noun) a work of fiction describing a utopia | - |
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| (noun) ideally perfect state; especially in its social and political and moral aspects | - |
| vaccinia | (noun) a viral disease of cattle causing a mild skin disease affecting the udder; formerly used to inoculate humans against smallpox | Synonyms: cowpox |
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| (noun) a local infection induced in humans by inoculation with the virus causing cowpox in order to confer resistance to smallpox; normally lasts three weeks and leaves a pitted scar | Synonyms: vaccina, variola vaccina, variola vaccine, variola vaccinia |
| vedalia | (noun) native to Australia; introduced elsewhere to control scale insects | Synonyms: Rodolia cardinalis |
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| vernonia | (noun) any of various plants of the genus Vernonia of tropical and warm regions of especially North America that take their name from their loose heads of purple to rose flowers that quickly take on a rusty hue | Synonyms: ironweed |
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| viraemia | (noun) the presence of a virus in the blood stream | Synonyms: viremia |
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| viremia | (noun) the presence of a virus in the blood stream | Synonyms: viraemia |
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| welwitschia | (noun) curious plant of arid regions of southwestern Africa having a yard-high and yard-wide trunk like a turnip with a deep taproot and two large persistent woody straplike leaves growing from the base; living relic of a flora long disappeared; some may be 700-5000 years old | Synonyms: Welwitschia mirabilis |
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| whitlavia | (noun) desert plant of southern California with blue or violet tubular flowers in terminal racemes | Synonyms: California bluebell, Phacelia minor, Phacelia whitlavia |
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| wistaria | (noun) any flowering vine of the genus Wisteria | Synonyms: wisteria |
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| wisteria | (noun) any flowering vine of the genus Wisteria | Synonyms: wistaria |
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| woodsia | (noun) any fern of the genus Woodsia | - |
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| xanthemia | (noun) excess carotene in the blood stream; can cause the skin to turn a pale yellow or red color | Synonyms: carotenemia |
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| xanthopsia | (noun) visual defect in which objects appear to have a yellowish hue; sometimes occurs in cases of jaundice | - |
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| xenophobia | (noun) a fear of foreigners or strangers | - |
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| xerodermia | (noun) a mild form of ichthyosis characterized by abnormal dryness and roughness of the skin | Synonyms: xeroderma |
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| xerophthalmia | (noun) abnormal dryness of the conjunctiva and cornea of the eyes; may be due to a systemic deficiency of vitamin A | Synonyms: conjunctivitis arida, xeroma, xerophthalmus |
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| xerostomia | (noun) abnormal dryness of the mouth resulting from decreased secretion of saliva | Synonyms: dry mouth |
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| yautia | (noun) tropical American aroid having edible tubers that are cooked and eaten like yams or potatoes | Synonyms: malanga, spoonflower, tannia, Xanthosoma atrovirens, Xanthosoma sagittifolium |
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| zamia | (noun) any of various cycads of the genus Zamia; among the smallest and most verdant cycads | - |
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| zinnia | (noun) any of various plants of the genus Zinnia cultivated for their variously and brightly colored flower heads | Synonyms: old maid, old maid flower |
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