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tetracycline an antibiotic derived from certain microorganisms or synthesized, used to treat many different infections.
tetrad a group or set of four. [3 definitions]
tetraethyl lead a poisonous, colorless liquid compound of lead used chiefly in gasoline to improve combustion and reduce engine knock.
tetragram a word consisting of four letters.
Tetragrammaton the four Hebrew letters, usu. transliterated as "YHWH" or "JHWH," representing the name of God, considered too holy to be spoken aloud.
tetrahedral of or shaped like a tetrahedron.
tetrahedron a solid figure formed by four triangular faces; triangular pyramid.
tetralogy any series of four related plays, novels, operas, or the like. [2 definitions]
tetrameter a line of verse that contains four metrical feet. [3 definitions]
tetrarch in ancient Rome, the ruler of the fourth part of a province. [2 definitions]
tetrarchy the rule of, or territory ruled by, a tetrarch. [2 definitions]
tetravalent having a valence of four. [2 definitions]
tetroxide an oxide in which any one molecule contains four atoms of oxygen.
tetter any of several skin diseases, such as eczema or herpes, that cause itching and eruptions of the epidermis.
Teuton a member of an ancient Germanic people that lived in northern Europe. [2 definitions]
Teutonic of or pertaining to the ancient Teutons or their culture, language, or the like. [3 definitions]
Tevet the fourth month of the Jewish lunisolar calendar, occurring from late December through early January in the Gregorian calendar.
Texas a southwestern U.S. state between Mexico and Oklahoma. (abbr.: TX) [2 definitions]
Texas fever an infectious disease of the red blood cells, transmitted by ticks, that is commonly found in cattle.
Texas leaguer in baseball, a fly ball that strikes the ground between the infield and the outfield and is designated a fair hit.
Texas tower a tall platform or structure, built offshore, that is used to support radar or navigation equipment.