11-letter words containing a, t, r, o
- travelogues — a lecture, slide show, or motion picture describing travels.
- treacherous — characterized by faithlessness or readiness to betray trust; traitorous.
- treachetour — a traitor
- treasonable — of the nature of treason.
- treaty port — any of the ports in China, Japan, or Korea through which trade with foreign countries was permitted by special treaty.
- tree mallow — a malvaceous treelike plant, Lavatera arborea, of rocky coastal areas of Europe and N Africa, having a woody stem, rounded leaves, and red-purple flowers
- tree tomato — an arborescent shrub, Cyphomandra betacea or C. crassifolia, native to South America but widely cultivated, bearing red egg-shaped edible fruit: family Solanaceae
- tremolo arm — a metal lever attached to the bridge of an electric guitar, used to vary the pitch of a played note
- trench coat — a waterproof overcoat styled along military lines, belted, with straps on the shoulders and lower sleeves.
- trepidation — tremulous fear, alarm, or agitation; perturbation.
- trepidatory — characterized by trepidation
- trial court — the court in which a controversy is first adjudicated (distinguished from appellate division).
- trial horse — an opponent who performs against a superior foe in a workout or exhibition.
- tribeswoman — a female member of a tribe.
- tribulation — grievous trouble; severe trial or suffering.
- triceratops — any of various dinosaurs of the genus Triceratops, of the late Cretaceous Period, having a bony crest on the neck, a long horn over each eye, and a shorter horn on the nose.
- trichomonad — any flagellate protozoan of the genus Trichomonas, parasitic in humans or animals.
- trimodality — (of a distribution) having three modes.
- trincomalee — a seaport in E Sri Lanka.
- trio sonata — a type of baroque composition in several movements scored for two upper parts and a bass part
- tripersonal — consisting of or existing in three persons, as the Godhead.
- tripetalous — having three petals.
- trisepalous — having three sepals.
- tritagonist — (in ancient Greece) the third member of an acting troupe, which always consisted of three actors. Compare protagonist (def 4), deuteragonist.
- trithionate — a salt of trithionic acid
- trituration — the act of triturating.
- trobar clus — a complex and obscure style of writing adopted by some 12th-century Provençal poets.
- trojan duck — a duck that is a carrier of avian flu and is therefore a threat to other birds and also to humans, but which shows no outward signs of infection
- trolley car — a streetcar propelled electrically by current taken by means of a trolley from a conducting wire strung overhead or running beneath a slot between the tracks.
- trombe wall — a glass-fronted exterior masonry wall that absorbs solar heat for radiation into a building.
- troop train — a train used for transporting military personnel
- trophically — of or relating to nutrition; concerned in nutritive processes.
- trophoblast — the layer of extraembryonic ectoderm that chiefly nourishes the embryo or develops into fetal membranes with nutritive functions.
- trophoplasm — the cytoplasm that is involved in the nutritive processes of a cell
- tropicality — pertaining to, characteristic of, occurring in, or inhabiting the tropics, especially the humid tropics: tropical flowers.
- tropicalize — to make tropical, as in character or appearance.
- troubadours — one of a class of medieval lyric poets who flourished principally in southern France from the 11th to 13th centuries, and wrote songs and poems of a complex metrical form in langue d'oc, chiefly on themes of courtly love. Compare trouvère.
- trouble man — troubleshooter (def 2).
- trypanocide — a drug or substance that kills trypanosomes
- trypanosoma — trypanosome.
- trypanosome — any minute, flagellate protozoan of the genus Trypanosoma, parasitic in the blood or tissues of humans and other vertebrates, usually transmitted by insects, often causing serious diseases, as African sleeping sickness in humans, and many diseases in domestic animals.
- tselinograd — a former name of Akmola.
- tuberaceous — belonging or relating to the order of fungi Tuberaceae, or specifically the truffle genus (Tuber)
- tuberculoma — a tumour or other mass that grows from a tuberculous lesion or caused by the tubercle bacillus
- tudorbethan — (of a contemporary building) imitative of Tudor and Elizabethan architecture
- turbocharge — to equip (an internal-combustion engine) with a turbocharger.
- turn around — move to face away
- tycho brahe — Tycho [tee-koh;; Danish ty-koh] /ˈti koʊ;; Danish ˈtü koʊ/ (Show IPA), 1546–1601, Danish astronomer.
- tympaniform — resembling or having the form of a drum or drum head
- typographer — a person skilled or engaged in typography.