| teleradium | See: teleradium therapy. (05 Mar 2000) |
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| 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) |
| telergy | Synonym: automatism. Origin: G. Tele, far off, + ergon, work (05 Mar 2000) |
| teleroentgenography | 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) |
| teleroentgentherapy | Radiation therapy administered with the source at a distance from the body. Compare: interstitial therapy. Synonym: teleroentgentherapy. Origin: G. Tele, distant, + therapeia, treatment (05 Mar 2000) |
| telerythin | <chemistry> A red crystalline compound related to, or produced from, erythrin. So called because regarded as the end of the series of erythrin compounds. Origin: Gr. End + E. Erythrin. Source: Websters Dictionary (01 Mar 1998) |
| telescope | <instrument> To slide or pass one within another, after the manner of the sections of a small telescope or spyglass; to come into collision, as railway cars, in such a manner that one runs into another. Origin: Telescoped; Telescoping. To cause to come into collision, so as to telescope. An optical instrument used in viewing distant objects, as the heavenly bodies. A telescope assists the eye chiefly in two ways; first, by enlarging the visual angle under which a distant object is seen, and thus magnifying that object; and, secondly, by collecting, and conveying to the eye, a larger beam of light than would enter the naked organ, thus rendering objects distinct and visible which would otherwise be indistinct and or invisible. Its essential parts are the object glass, or concave mirror, which collects the beam of light, and forms an image of the object, and the eyeglass, which is a microscope, by which the image is magnified. Achromatic telescope. See Achromatic. Aplanatic telescope, a telescope having an aplanatic eyepiece. Astronomical telescope, a telescope which has a simple eyepiece so constructed or used as not to reverse the image formed by the object glass, and consequently exhibits objects inverted, which is not a hindrance in astronomical observations. Cassegrainian telescope, a reflecting telescope invented by Cassegrain, which differs from the Gregorian only in having the secondary speculum convex instead of concave, and placed nearer the large speculum. The Cassegrainian represents objects inverted; the Gregorian, in their natural position. The Melbourne telescope is a Cassegrainian telescope. Dialytic telescope. See Dialytic. Equatorial telescope. See the Note under Equatorial. Galilean telescope, a refracting telescope in which the eyeglass is a concave instead of a convex lens, as in the common opera glass. This was the construction originally adopted by Galileo, the inventor of the instrument. It exhibits the objects erect, that is, in their natural positions. Gregorian telescope, a form of reflecting telescope. See Gregorian. Herschelian telescope, a reflecting telescope of the form invented by Sir William Herschel, in which only one speculum is employed, by means of which an image of the object is formed near one side of the open end of the tube, and to this the eyeglass is applied directly. Newtonian telescope, a form of reflecting telescope. See Newtonian. Photographic telescope, a telescope specially constructed to make photographs of the heavenly bodies. Prism telescope. See Teinoscope. Reflecting telescope, a telescope in which the image is formed by a speculum or mirror (or usually by two speculums, a large one at the lower end of the telescope, and the smaller one near the open end) instead of an object glass. See Gregorian, Cassegrainian, Herschelian, and Newtonian, telescopes, above. Refracting telescope, a telescope in which the image is formed by refraction through an object glass. <zoology> Telescope carp, a slender telescope attached to the barrel, having cross wires in the eyepiece and used as a sight. Terrestrial telescope, a telescope whose eyepiece has one or two lenses more than the astronomical, for the purpose of inverting the image, and exhibiting objects erect. Origin: Gr. Viewing afar, farseeing; far, far off + a watcher, akin to to view: cf. F. Telescope. See Telegraph, and -scope. Source: Websters Dictionary (01 Mar 1998) |
| telescopic denture | A complete denture that is supported by both soft tissue and natural teeth that have been altered so as to permit the denture to fit over them. The altered teeth may have been fitted with short or long copings, locking devices, or connecting bars. Synonym: bar joint denture, hybrid prosthesis, overdenture, telescopic denture. (05 Mar 2000) |
| telescopic spectacles | Magnifying spectacles obtained by using a convex objective lens and a concave eyepiece separated by the difference in their focal lengths. (05 Mar 2000) |
| telescopical | 1. Of or pertaining to a telescope; performed by a telescope. 2. Seen or discoverable only by a telescope; as, telescopic stars. 3. Able to discern objects at a distance; farseeing; far-reaching; as, a telescopic eye; telescopic vision. 4. <machinery> Having the power of extension by joints sliding one within another, like the tube of a small telescope or a spyglass; especially, constructed of concentric tubes, either stationary, as in the telescopic boiler, or movable, as in the telescopic chimney of a war vessel, which may be put out of sight by being lowered endwise. Origin: Cf. F. Telescopique Source: Websters Dictionary (01 Mar 1998) |
| telescopically | In a telescopical manner; by or with the telescope. Source: Websters Dictionary (01 Mar 1998) |
| telescopist | One who uses a telescope. Source: Websters Dictionary (01 Mar 1998) |
| telesis | A goal to be attained by planned conduct. Origin: G. Telos, end, + -osis, condition (05 Mar 2000) |
| telespectroscope | <astronomy, instrument> A spectroscope arranged to be attached to a telescope for observation of distant objects, as the sun or stars. Origin: Gr. Far off + E. Spectroscope. Source: Websters Dictionary (01 Mar 1998) |
| telemetering capsule |
a small radio transmitter encased in a capsule the size of an ordinary drug capsule that can be swallowed or otherwise inserted in the body to give information about conditions (pressure, temperature, pH, etc.) within an organ; called also radio pill.
Ãâó: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| telomere |
A telomere is a region of highly repetitive DNA at the end of a chromosome similar to the plastic 'tips' on the end of a shoe lace. Telomeres function as an aglet. Every time linear eukaryotic chromosomes are replicated, the DNA polymerase complex stops several hundred bases before the end; if it were not for telomeres, this would quickly result in the loss of useful genetic information. ...
Ãâó: en.wikipedia.org/wiki/Telomere
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| telophase |
In biology, mitosis is the process of chromosome segregation and nuclear division that follows replication of the genetic material in eukaryotic cells. This process assures that each daughter nucleus receives a complete copy of the organism's genome. In most eukaryotes mitosis is accompanied with cell division or cytokinesis, but there are many exceptions, for instance among the fungi. ...
Ãâó: en.wikipedia.org/wiki/Telophase
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| telogen effluvium |
Telogen Effluvium is characterized by sudden, diffuse hair loss caused by an interruption in the normal hair growth cycle. This interruption is often the result of trauma, such as chemotherapy, childbirth, major surgery, severe stress, and severe chronic illness. This trauma causes large numbers of hair follicles to enter a stage of telogen, or rest, simultaneously. After roughly 3 months of the telogen cycle the follicles will enter the anagen cycle, a stage of growth. ...
Ãâó: en.wikipedia.org/wiki/Telogen_effluvium
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| telson |
The telson is the last division of the body of a crustacean. It is not considered a true segment because it never carries any appendages. Together with the uropods, it forms the "tail fan" of lobsters, shrimp and other decapods. These are used as a paddle in the "caridoid escape reaction" (lobstering), whereby an alarmed animal rapidly flexes its tail, causing it to dart backwards. Krill can reach speeds of over 60 cm per second by this means. ...
Ãâó: en.wikipedia.org/wiki/Telson
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| TEL | the telephone wire that connects to the handset |
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| TEL | a disc on a telephone that is rotated a fixed distance for each number called |
| TEL | a directory containing an alphabetical list of telephone subscribers and their telephone numbers |
| TEL | a workplace that serves as a telecommunications facility where lines from telephones can be connected together to permit communication |
| TEL | an additional telephone set that is connected to the same telephone line |
| TEL | an interview conducted over the telephone |
| TEL | a jack for plugging in a telephone |
| TEL | booth for using a telephone |
| TEL | a telephone connection |
| TEL | the wire that carries telegraph and telephone signals |
| TEL | a message transmitted by telephone |
| TEL | the number is used in calling a particular telephone |
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