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thermoplastic softening and becoming pliable when heated, but returning to its original state and properties when cooled, as certain plastics and resins. [2 definitions]
thermoregulation the maintenance by a living body of a constant internal body temperature regardless of outside environmental temperature.
Thermos trademark for a container using an inside vacuum holder to keep beverages or foods at their original temperature. [2 definitions]
thermosetting denoting materials that harden and set permanently under heat, such as certain resins.
thermosphere the extreme outer edge of the earth's atmosphere, within which temperature increases steadily with altitude.
thermostat an automatic device that regulates temperature, as in a room or on an electrical heating or cooling appliance, by activating controls in response to temperature changes.
thermotropism any growth or movement, positive or negative, that is made by plants or other living organisms in response to heat.
theropod any dinosaur of the suborder Theropoda, such as Tyrannosaurus and Velociraptor, characterized by hollow bones and three-toed limbs, usually possessing short forelimbs and walking on two legs.
Theropoda a suborder of dinosaur characterized by hollow bones and three-toed limbs.
the same in the same manner or way.
thesaurus a dictionary of words grouped as synonyms or antonyms. [2 definitions]
these pl. of this.
Theseus king of Athens who, according to Greek mythology, slew the Minotaur and, with the help of Ariadne, found his way out of the Labyrinth.
the short haul a relatively short or long distance. [2 definitions]
thesis a statement or proposition put forward and supported by proof or argument. [4 definitions]
Thespian (often l.c.) of or pertaining to the drama or acting; dramatic. [2 definitions]
Thessalonians either of two books of the New Testament, consisting of letters written by the apostle Paul to the Christians of Thessalonica.
the straw that broke the camel's back the final, decisive defeat, failure, indignity, burden, or the like that causes collapse, exhaustion, the losing of one's temper, or the like.
theta the name of the eighth letter of the Greek alphabet.
The Thousand and One Nights see Arabian Nights.
thews muscles, sinews, or physical strength.