| 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 salt of the earth |
a very good-hearted and decent person or group of people. |
| the same |
in the same manner or way. |
| thesaurus |
a dictionary of words grouped as synonyms or antonyms. [2 definitions] |
| these |
the things, persons, or animals that are currently being talked about or being pointed to in a spot very close to the speaker. [2 definitions] |
| 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." |