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Glossary · Nouns · T

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TermTypeDefinitionClassificationsUpdated
Trustee-Beneficiary RelationnounMWEthe responsibility of a trustee to act in the best interests of the beneficiaryverifiedMay 18, 2026
Trusteeshipnounthe position of trusteeverifiedMay 18, 2026
Trusternouna supporter who accepts something as trueverifiedMay 18, 2026
Trustfulnessnounthe trait of believing in the honesty and reliability of othersverifiedMay 18, 2026
Trustinessnounthe trait of deserving trust and confidenceverifiedMay 18, 2026
Trustingnessnounthe trait of believing in the honesty and reliability of othersverifiedMay 18, 2026
Trustornoun(law) a person who creates a trust by giving real or personal property in trust to a trustee for the benefit of a beneficiaryverifiedMay 18, 2026
TrustworthinessnounThe attribute of a person or organization that provides confidence to others of the qualifications, capabilities, and reliability of that entity to perform specific tasks and fulfill assigned responsibilities.MetricMay 9, 2026
Trustworthy AinounMWETrustworthy AI has three components: (1) it should be lawful, ensuring compliance with all applicable laws and regulations (2) it should be ethical, demonstrating respect for, and ensure adherence to, ethical principles and values and (3) it should be robust, both from a technical and social perspective, since, even with good intentions, AI systems can cause unintentional harm. Characteristics of Trustworthy AI systems include: valid and reliable, safe, secure and resilient, accountable and transparent, explainable and interpretable, privacy-enhanced, and fair with harmful bias managed. Trustworthy AI concerns not only the trustworthiness of the AI system itself but also comprises the trustworthiness of all processes and actors that are part of the AI system’s life cycle. Trustworthy AI is based on respect for human rights and democratic values.CapabilityMay 18, 2026
Trustworthy SystemnounMWEComputer hardware, software and procedures that— 1) are reasonably secure from intrusion and misuse; 2) provide a reasonable level of availability, reliability, and correct operation; 3) are reasonably suited to performing their intended functions; and 4) adhere to generally accepted security procedures.SystemMay 12, 2026
Truthnounthe quality of being near to the true valueverifiedMay 18, 2026
Truth DrugnounMWEan intravenous anesthetic drug that has a hypnotic effectverifiedMay 18, 2026
Truth QuarknounMWEa hypothetical quark with a charge of +2/3 and a mass more than 100,000 times that of an electronverifiedMay 18, 2026
Truth SerumnounMWEan intravenous anesthetic drug that has a hypnotic effectverifiedMay 18, 2026
Truthfulnessnounthe quality of being truthfulverifiedMay 18, 2026
Try SquarenounMWEa square having a metal ruler set at right angles to another straight pieceverifiedMay 18, 2026
Try-Onnounputting clothes on to see whether they fitverifiedMay 18, 2026
Trying onnounMWEputting clothes on to see whether they fitverifiedMay 18, 2026
Trypsinnounan enzyme of pancreatic originverifiedMay 18, 2026
Trypsinogennouninactive precursor of trypsinverifiedMay 18, 2026
Tryptophannounan amino acid that occurs in proteinsverifiedMay 18, 2026
Tryptophanenounan amino acid that occurs in proteinsverifiedMay 18, 2026
Trystnouna secret rendezvous, especially between loversverifiedMay 18, 2026
Tsarnouna male Slavic monarch or emperor, most commonly used with regard to Russia prior to 1917verifiedMay 18, 2026
Tsarinanounthe wife or widow of a czarverifiedMay 18, 2026
Tsaritsanounthe wife or widow of a czarverifiedMay 18, 2026
Tsatskenoun(Yiddish) an attractive, unconventional womanverifiedMay 18, 2026
TSECnounTelecommunications Security.FrameworkRegulatedCUIMay 9, 2026
TSEC NomenclaturenounMWESystem for identifying the type and purpose of certain items of COMSEC material.FrameworkRestrictedCUIMay 9, 2026
Tsetsenounbloodsucking African flyverifiedMay 18, 2026
Tsetse FlynounMWEbloodsucking African flyverifiedMay 18, 2026
Tshatshkenoun(Yiddish) an attractive, unconventional womanverifiedMay 18, 2026
Tsinenounwild ox of the Malay ArchipelagoverifiedMay 18, 2026
Tsorisnoun(Yiddish) trouble and sufferingverifiedMay 18, 2026
Tsunaminouna cataclysm resulting from a destructive sea wave caused by an earthquake or volcanic eruptionverifiedMay 18, 2026
Tsurisnounaggravating trouble from YiddishverifiedMay 18, 2026
Tsutsugamushi DiseasenounMWEtransmitted by larval mites and widespread in AsiaverifiedMay 18, 2026
Tuataranounonly extant member of the order Rhynchocephalia of large spiny lizard-like diapsid reptiles of coastal islands off New ZealandverifiedMay 18, 2026
Tubnouna relatively large open container that you fill with water and use to wash the bodyverifiedMay 18, 2026
Tub GurnardnounMWEa kind of gurnardverifiedMay 18, 2026
Tub-Cartnouna cart with an underslung axle and two seatsverifiedMay 18, 2026
Tub-Thumpernouna noisy and vigorous or ranting public speakerverifiedMay 18, 2026
Tubanounthe lowest brass wind instrumentverifiedMay 18, 2026
Tubal LigationnounMWEa sterilization procedure with womenverifiedMay 18, 2026
Tubal PregnancynounMWEectopic pregnancy in a Fallopian tubeverifiedMay 18, 2026
Tubbinessnounthe property of having a plump and round bodyverifiedMay 18, 2026
Tube FootnounMWEtentacular tubular process of most echinoderms (starfish and sea urchins and holothurians) having a sucker at the end and used for e.g. locomotion and respirationverifiedMay 18, 2026
Tube WellnounMWEa well made by driving a tube into the earth to a stratum that bears waterverifiedMay 18, 2026
Tube WrenchnounMWEadjustable wrench for gripping and turning a pipeverifiedMay 18, 2026
Tube-Nosed BatnounMWEany of various fruit bats of the genus Nyctimene distinguished by nostrils drawn out into diverging tubesverifiedMay 18, 2026
Tube-Nosed Fruit BatnounMWEany of various fruit bats of the genus Nyctimene distinguished by nostrils drawn out into diverging tubesverifiedMay 18, 2026
Tubeless TirenounMWEpneumatic tire not needing an inner tube to be airtightverifiedMay 18, 2026
Tubernouna fleshy underground stem or root serving for reproductive and food storageverifiedMay 18, 2026
Tuberclenouna protuberance on a bone especially for attachment of a muscle or ligamentverifiedMay 18, 2026
Tubercle BacillusnounMWEcause of tuberculosisverifiedMay 18, 2026
Tuberculinnouna sterile liquid containing a purified protein derivative of the tuberculosis bacteriumverifiedMay 18, 2026
Tuberculin Skin TestnounMWEa skin test to determine past or present infection with the tuberculosis bacteriumverifiedMay 18, 2026
Tuberculin TestnounMWEa skin test to determine past or present infection with the tuberculosis bacteriumverifiedMay 18, 2026
Tuberculoid LeprosynounMWEleprosy characterized by tumors in the skin and cutaneous nervesverifiedMay 18, 2026
Tuberculosisnouninfection transmitted by inhalation or ingestion of tubercle bacilli and manifested in fever and small lesions, usually in the lungs but in various other parts of the body in acute stagesverifiedMay 18, 2026
Tuberositynouna protuberance on a bone especially for attachment of a muscle or ligamentverifiedMay 18, 2026
Tubfulnounthe amount that a tub will holdverifiedMay 18, 2026
Tubingnounconduit consisting of a long hollow object (usually cylindrical) used to hold and conduct objects or liquids or gasesverifiedMay 18, 2026
Tubocurarinenouna toxic alkaloid found in certain tropical South American trees that is a powerful relaxant for striated musclesverifiedMay 18, 2026
Tubular CavitynounMWEa cavity having the shape of a tubeverifiedMay 18, 2026
Tubulenouna small tubeverifiedMay 18, 2026
TuchasnounbuttocksverifiedMay 18, 2026
TuchusnounbuttocksverifiedMay 18, 2026
Tuck BoxnounMWEa box for storing eatables (especially at boarding school)verifiedMay 18, 2026
Tuck ShopnounMWEa candy store in Great BritainverifiedMay 18, 2026
Tuckahoenounperennial herb of the eastern United States having arrowhead-shaped leaves and an elongate pointed spathe and green berriesverifiedMay 18, 2026
Tucker-Bagnouna bag used for carrying foodverifiedMay 18, 2026
Tucketnoun(music) a short lively tune played on brass instrumentsverifiedMay 18, 2026
Tudungnouna scarf worn around the head by Muslim women in MalaysiaverifiedMay 18, 2026
Tufanouna soft porous rock consisting of calcium carbonate deposited from springs rich in limeverifiedMay 18, 2026
Tuffnounhard volcanic rock composed of compacted volcanic ashverifiedMay 18, 2026
Tuffetnouna low seat or a stool to rest the feet of a seated personverifiedMay 18, 2026
Tuftnouna bunch of hair or feathers or growing grassverifiedMay 18, 2026
Tufted CentaurynounMWEtufted perennial of western Europe and Azores having bright pink to white flowersverifiedMay 18, 2026
Tufted PansynounMWEEuropean viola with an unusually long corolla spurverifiedMay 18, 2026
Tufted PuffinnounMWEnorthern Pacific puffin having a large yellow plume over each eyeverifiedMay 18, 2026
Tufted TitmousenounMWEcrested titmouse of eastern and midwestern United StatesverifiedMay 18, 2026
Tufted VetchnounMWEcommon perennial climber of temperate regions of Eurasia and North America having dense elongate clusters of flowersverifiedMay 18, 2026
Tug-Of-Warnouna contest in which teams pull of opposite ends of a ropeverifiedMay 18, 2026
Tugboatnouna powerful small boat designed to pull or push larger shipsverifiedMay 18, 2026
Tuggernounsomeone who pulls, tugs, or drags in an effort to move somethingverifiedMay 18, 2026
Tughriknounthe basic unit of money in MongoliaverifiedMay 18, 2026
Tugriknounthe basic unit of money in MongoliaverifiedMay 18, 2026
Tuillenounarmor plate that protects the hip and thighverifiedMay 18, 2026
Tuitionnounteaching pupils individually, usually by a tutor hired privatelyverifiedMay 18, 2026
Tuition FeenounMWEa fee paid for instruction (especially for higher education)verifiedMay 18, 2026
Tularaemianouna highly infectious disease of rodents (especially rabbits and squirrels) and sometimes transmitted to humans by ticks or flies or by handling infected animalsverifiedMay 18, 2026
Tularemianouna highly infectious disease of rodents (especially rabbits and squirrels) and sometimes transmitted to humans by ticks or flies or by handling infected animalsverifiedMay 18, 2026
Tulipnounany of numerous perennial bulbous herbs having linear or broadly lanceolate leaves and usually a single showy flowerverifiedMay 18, 2026
Tulip BednounMWEa flowerbed in which tulips are growingverifiedMay 18, 2026
Tulip GentiannounMWEone of the most handsome prairie wildflowers having large erect bell-shaped bluish flowersverifiedMay 18, 2026
Tulip OrchidnounMWEMexican epiphytic orchid with glaucous grey-green leaves and lemon- to golden-yellow flowers appearing only partially openedverifiedMay 18, 2026
Tulip PoplarnounMWEtall North American deciduous timber tree having large tulip-shaped greenish yellow flowers and conelike fruitverifiedMay 18, 2026
Tulip TreenounMWEtall North American deciduous timber tree having large tulip-shaped greenish yellow flowers and conelike fruitverifiedMay 18, 2026
Tulipwoodnounthe variegated or showily striped ornamental wood of various tulipwood treesverifiedMay 18, 2026