| teleostei | <zoology> A subclass of fishes including all the ordinary bony fishes as distinguished from the ganoids. Origin: NL, fr. Gr. Complete + bone. Source: Websters Dictionary (01 Mar 1998) |
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| teleostomi | <zoology> An extensive division of fishes including the ordinary fishes (Teleostei) and the ganoids. Origin: NL, fr. Gr. Complete + mouth. Source: Websters Dictionary (01 Mar 1998) |
| teleozoic | <zoology> Having tissued composed of cells. Source: Websters Dictionary (01 Mar 1998) |
| teleozoon | <zoology> A metazoan. Source: Websters Dictionary (01 Mar 1998) |
| telepathine | <chemistry> An alkaloid accompanying harmaline (in the Peganum harmala), and obtained from it by oxidation. It is a white crystalline substance. See: Harmaline. Source: Websters Dictionary (01 Mar 1998) |
| telepathology | Transmission and interpretation of tissue specimens via remote telecommunication, generally for the purpose of diagnosis or consultation but may also be used for continuing education. (12 Dec 1998) |
| telepathy | The knowledge or communication by one person with the mental processes of another through channels other than known physical or perceptual processes. (12 Dec 1998) |
| telephone | <physics> An instrument for reproducing sounds, especially articulate speech, at a distance. The ordinary telephone consists essentially of a device by which currents of electricity, produced by sounds through the agency of certain mechanical devices and exactly corresponding in duration and intensity to the vibrations of the air which attend them, are transmitted to a distant station, and there, acting on suitable mechanism, reproduce similar sounds by repeating the vibrations. The necessary variations in the electrical currents are usually produced by means of a microphone attached to a thin diaphragm upon which the voice acts, and are intensified by means of an induction coil. In the magnetic telephone, or magneto-telephone, the diaphragm is of soft iron placed close to the pole of a magnet upon which is wound a coil of fine wire, and its vibrations produce corresponding vibrable currents in the wire by induction. The mechanical, or string, telephone is a device in which the voice or sound causes vibrations in a thin diaphragm, which are directly transmitted along a wire or string connecting it to a similar diaphragm at the remote station, thus reproducing the sound. It does not employ electricity. Origin: Gr. Far off + sound. Source: Websters Dictionary (01 Mar 1998) |
| telephone theory | A theory of pitch perception which states that the cochlea possesses no faculty of sound analysis, but that the frequency of the impulses transmitted over the auditory nerve fibres corresponds to the frequency of the sound vibrations, and is the sole basis for pitch discrimination; a theory no longer tenable. (05 Mar 2000) |
| telepolarizcope | <optics> A polarizcope arranged to be attached to a telescope. Origin: Gr. Far off + E. Polarizcope. Source: Websters Dictionary (01 Mar 1998) |
| teleradiography | Radiography with the X-ray tube positioned about 2 m from the film thereby securing practical parallelism of the X-rays to minimise geometric distortion; the standard configuration for chest radiography. Compare: air-gap technique. Synonym: teleroentgenography. Origin: G. Tele, distant, + radiography (05 Mar 2000) |
| teleradiology | The electronic transmission of radiological images from one location to another for the purposes of interpretation and/or consultation. Users in different locations may simultaneously view images with greater access to secondary consultations and improved continuing education. (12 Dec 1998) |
| teleradium | See: teleradium therapy. (05 Mar 2000) |
| teleradium therapy | Therapeutic use of radium rays, the source of which is a quantity of radium at a distance from the patient. Synonym: radium beam therapy. (05 Mar 2000) |
| telereceptor | An organ, such as the eye, that can receive sense stimuli from a distance. (05 Mar 2000) |