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telemark a turn in skiing in which the skier's balance is shifted forward, thereby moving the tip of a ski gradually inward in the direction of the turn.
telemarketing the use of the telephone as a sales tool in research and promotion, processing orders, and the like.
telemeter any instrument that measures, records, and transmits data on physical characteristics such as radiation and temperature from a great distance, used esp. in space vehicles. [3 definitions]
telemetry the science, technology, or process of gathering and transmitting data automatically over great distances, as from an artificial satellite to a monitoring station on earth.
Telemos in Greek mythology, the prophetic son of Eurymos, known for warning Polyphemus about Odysseus.
telencephalon the anterior part of the forebrain, including the cerebral hemispheres and cortex, and the olfactory lobes.
teleology the philosophical doctrine that final causes exist. [2 definitions]
telepathy communication between minds without the use of sensory signals.
telephone a device used to transmit sound, esp. speech, over long distances, usu. by wire. [6 definitions]
telephony the design, construction, or operation of telephone systems.
Telephoto trademark for a photographic system that uses telescopic lenses to produce large images of distant objects. [2 definitions]
telephotograph a picture produced with a photographic lens or lens system that creates a large image of a distant object.
telephotography the art, process, or technique of taking pictures of distant objects with a specialized lens.
teleplay a play written for or produced on television.
teleportation the hypothetical transmission of matter by telekinesis.
teleprinter see teletypewriter.
TelePrompTer trademark for a device that provides a written script that is visible to a performer or speaker on television, but not to the audience.
telescope an optical instrument, usu. cylindrical, that employs lenses and sometimes mirrors to enlarge the images of distant objects, esp. those in outer space. [7 definitions]
telescopic of or relating to a telescope. [4 definitions]
telescopy the use or study of telescopes.
telesis an intentional use of natural or social processes to attain chosen goals.