| The Columbia Encyclopedia, Sixth Edition. 2001-07. |
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| travertine to Troyes |
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| travertine |
| Traviès de Villers, Charles Joseph |
| Travis, William Barrett |
| travois |
| Traynor, Roger John |
| treacle |
| treason |
| treasure-trove |
| Treasury, United States Department of the |
| Treat, Robert |
| treaty |
| treaty port |
| Trebbia |
| Trebizond |
| Trebizond, empire of |
| treble |
| Treblinka |
| Trebonius, Caius |
| Tredyakovsky, Vasily Kirilovich |
| Tree, Ellen |
| Tree, Sir Herbert Beerbohm |
| tree |
| Treece, Henry |
| tree fern |
| tree frog |
| treehopper |
| tree mouse |
| tree of heaven |
| tree shrew |
| tree surgery |
| tree toad |
| trefoil |
| Treitschke, Heinrich von |
| Trek, Great |
| Trelawny, Edward John |
| Trelleborg |
| trematode |
| tremolite |
| Trench, Richard Chenevix |
| trench |
| Trenchard, Hugh Montague Trenchard, 1st Viscount |
| trench fever |
| trench mouth |
| trench warfare |
| Trenck, Franz, Freiherr von der |
| Trent, city, Italy |
| Trent, river, England |
| Trent, Council of |
| Trent Affair |
| Trent Canal |
| Trentino–Alto Adige |
| Trento |
| Trenton, town, Canada |
| Trenton, cities, United States |
| trepang |
| Tresco |
| Tres Marías, Las |
| trespass |
| Trevelyan, Sir Charles Edward |
| Trevelyan, George Macaulay |
| Trevelyan, Sir George Otto |
| Treves |
| Trevino, Lee |
| Trevisa, John of |
| Treviso |
| Trevithick, Richard |
| Trevor, William |
| Trevor-Roper, Hugh Redwald, Baron Dacre of Glanton |
| Triad Society |
| trial |
| trial by battle |
| triangle, in mathematics |
| triangle, in music |
| Triangle Waist Company |
| triangulation |
| Trianon |
| Trianon, Treaty of |
| Triassic period |
| triathlon |
| tribe |
| Tribonian |
| Triborough Bridge |
| tribune |
| tricarboxylic acid cycle |
| triceps |
| Triceratops |
| trichina |
| trichinosis |
| trichloromethane |
| trichomoniasis |
| Trichur |
| trickster |
| Tricoupis, Hariloas |
| trident |
| Tridentum |
| Trier |
| Trieste |
| triforium |
| triggerfish |
| Triglav |
| triglyceride |
| Trigonometric Functions (table) |
| trigonometry |
| Trikora Peak |
| trill |
| Trilling, Lionel |
| trillium |
| trilobite |
| Trincomalee |
| Trinidad |
| Trinidad and Tobago |
| trinitrotoluene |
| Trinity, river, United States |
| Trinity, doctrine in Christianity |
| Trinity Bay |
| Trinity College |
| Trinity Sunday |
| triode |
| Triolet, Elsa |
| Triple Alliance |
| Triple Alliance, War of the |
| Triple Alliance and Triple Entente |
| tripletail |
| Tripoli, city, Lebanon |
| Tripoli, city, Libya |
| Trípolis |
| Tripolis |
| Tripolitania |
| Tripolitan War |
| Trippe, Juan Terry |
| Triptolemus |
| Tripura |
| trireme |
| trisection of an angle |
| Trissino, Gian Giorgio |
| Trist, Nicholas Philip |
| Tristan |
| Tristan da Cunha |
| Tristan L’Hermite, François |
| Tristram and Isolde |
| tritium |
| Triton, in astronomy |
| Triton, in Greek mythology |
| triumphal arch |
| Triumvirate |
| Trivandrum |
| Trnava |
| Trnovo |
| Troas |
| Trobriand Islands |
| Trochu, Louis Jules |
| Troelstra, Pieter Jelles |
| Trogir |
| trogon |
| Trogus |
| Trogyllium |
| Troilus and Cressida |
| Trois Rivières |
| Troitse-Sergiyeva Lavra |
| Trojan asteroids |
| Trojan War |
| troll |
| trolley |
| Trollhättan |
| Trollope, Anthony |
| trombone |
| Tromelin Island |
| Tromp, Cornelis |
| Tromp, Maarten Harpertszoon |
| trompe l’oeil |
| Troms |
| Tromsø |
| Trondheim |
| Trondheimsfjord |
| Trophimus |
| Trophonius |
| tropical medicine |
| tropical year |
| Tropic of Cancer |
| Tropic of Capricorn |
| tropics |
| tropism |
| tropopause |
| troposphere |
| Troppau |
| Troppau, Congress of |
| Trotsky, Leon |
| trotter |
| trotting races |
| troubadours |
| Troubetzkoy, Paul, Prince |
| Troup, George Michael |
| trout |
| trouvères |
| Trouville-sur-Mer |
| Trowbridge |
| Troy, ancient city, Asian Turkey |
| Troy, cities, United States |
| Troyat, Henri |
| Troyes |
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| | | The Columbia Encyclopedia, Sixth Edition. Copyright © 2007 Columbia University Press. |
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