Telengiscope Te·len"gi·scope noun [ Greek th^le far + ... near + -scope .] (Optics) An instrument of such focal length that it may be used as an observing telescope for objects close at hand or as a long-focused microscope.

Teleocephial Te`le·o·ceph"i·al (tē`le*o*sĕf"ȧ*lī or tĕ`le-) noun plural [ New Latin , from Greek te`leos complete + kefalh` head.] (Zoology) An extensive order of bony fishes including most of the common market species, as bass, salmon, cod, perch, etc.

Teleological Te`le·o·log"ic·al adjective [ Confer French téléologique .] (Biol.) Of or pertaining to teleology, or the doctrine of design. -- Te`le*o*log"ic*al*ly , adverb

Teleologist Te`le·ol"o·gist noun (Biol.) One versed in teleology.

Teleology Te`le·ol"o·gy noun [ Greek ..., teleos , the end or issue + -logy : confer French téléologie .] The doctrine of the final causes of things ; specif. (Biol.) , the doctrine of design, which assumes that the phenomena of organic life, particularly those of evolution, are explicable only by purposive causes, and that they in no way admit of a mechanical explanation or one based entirely on biological science; the doctrine of adaptation to purpose.

Teleophore Te"le·o·phore` noun [ Greek teleos complete + ... to bear.] (Zoology) Same as Gonotheca .

Teleorganic Te`le·or·gan"ic adjective [ Greek teleos complete + English organic .] (Physiol.) Vital; as, teleorganic functions.

Teleosaur Te`le·o·saur" noun (Paleon.) Any one of several species of fossil suarians belonging to Teleosaurus and allied genera. These reptiles are related to the crocodiles, but have biconcave vertebræ.

Teleosaurus Te`le·o·sau"rus noun [ New Latin , from Greek ... complete, perfect + ... a lizard.] (Paleon.) A genus of extinct crocodilian reptiles of the Jurassic period, having a long and slender snout.

Teleost Te"le·ost noun [ Greek ... complete + ... bone.] (Zoology) One of the Teleosti. Also used adjectively.

Teleostean Te`le·os"te·an adjective (Zoology) Of or pertaining to the teleosts. -- noun A teleostean fish.

Teleostei Te`le·os"te·i noun plural [ New Latin , from Greek ... complete + ... bone.] (Zoology) A subclass of fishes including all the ordinary bony fishes as distinguished from the ganoids.

Teleostomi Te"le·os`to·mi noun plural [ New Latin , from Greek ... complete + ... mouth.] (Zoology) An extensive division of fishes including the ordinary fishes (Teleostei) and the ganoids.

Teleozoic Te`le·o·zo"ic adjective (Zoology) Having tissued composed of cells.

Teleozoön Te·le·o·zo"ön noun (Zoology) A metazoan.

Telepathy Te·lep"a·thy noun [ Greek ... far off + ..., ..., to suffer.] The sympathetic affection of one mind by the thoughts, feelings, or emotions of another at a distance, without communication through the ordinary channels of sensation. -- Tel`e*path"ic , adjective -- Te*lep"a*thist , noun

Telepheme Tel"e·pheme noun [ Greek ... afar + ... a saying.] A message by a telephone. [ Recent]

Telephone Tel"e·phone noun [ Greek ... far off + ... sound.] (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.

Telephone Tel"e·phone transitive verb To convey or announce by telephone.

Telephone exchange Tel`e·phone ex·change" A central office in which the wires of telephones may be connected to permit conversation.

Telephonic Tel`e·phon"ic adjective [ Confer French téléphonique . See Telephone .] 1. Conveying sound to a great distance.

2. Of or pertaining to the telephone; by the telephone.

Telephonically Tel`e·phon"ic·al·ly adverb By telephonic means or processes; by the use of the telephone.

Telephony Te·leph"o·ny noun The art or process of reproducing sounds at a distance, as with the telephone.

Telephote Tel"e·phote noun [ Greek th^le far + fw^s , fwto`s , light.] A telelectric apparatus for producing images of visible objects at a distance.

Telephoto Tel`e·pho"to adjective Telephotographic; specif., designating a lens consisting of a combination of lenses specially designed to give a large image of a distant object in a camera of relatively short focal length.

Telephotograph Tel`e·pho"to·graph noun [ Greek th^le far + photograph .] A photograph, image, or impression, reproduced by or taken with a telephotographic apparatus.

Telephotographic Tel`e·pho`to·graph"ic adjective Designating, or pertaining to, the process of telephotography.

Telephotography Tel`e·pho·tog"ra·phy noun 1. The photography of distant objects in more enlarged form than is possible by the ordinary means, usually by a camera provided with a telephoto lens or mounted in place of the eyepiece of a telescope, so that the real or a magnified image falls on the sensitive plate.

2. Art or process of electrically transmitting and reproducing photographic or other pictures at a distance by methods similar to those used in electric telegraphy.

3. Less properly, phototelegraphy.

Telepolariscope Tel`e·po·lar"i·scope noun [ Greek ... far off + English polariscope .] (Opt.) A polariscope arranged to be attached to a telescope. Lockyer.

Telerythin Tel`e·ryth"in noun [ Greek ... end + English erythrin .] (Chemistry) A red crystalline compound related to, or produced from, erythrin. So called because regarded as the end of the series of erythrin compounds.

Telescope Tel"e·scope noun [ Greek ... viewing afar, farseeing; ... far, far off + ... a watcher, akin to ... to view: confer French télescope . See Telegraph , and -scope .] 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 under 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 (see Illust. under Reflecting telescope , below) is a Cassegrainian telescope. -- Dialytic telescope . See under 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 under 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 under 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, & Newtonian, telescopes , above. -- Refracting telescope , a telescope in which the image is formed by refraction through an object glass. -- Telescope carp (Zoology) , the telescope fish. -- Telescope fish (Zoology) , a monstrous variety of the goldfish having very protuberant eyes. -- Telescope fly (Zoology) , any two-winged fly of the genus Diopsis , native of Africa and Asia. The telescope flies are remarkable for having the eyes raised on very long stalks. -- Telescope shell (Zoology) , an elongated gastropod ( Cerithium telescopium ) having numerous flattened whorls. -- Telescope sight (Firearms) , 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.

Telescope Tel"e·scope adjective [ imperfect & past participle Telescoped ; present participle & verbal noun Telescoping .] 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. [ Recent]

Telescope Tel"e·scope transitive verb To cause to come into collision, so as to telescope. [ Recent]

Telescope Tel"e·scope (tĕl"e*skōp) adjective Capable of being extended or compacted, like a telescope, by the sliding of joints or parts one within the other; telescopic; as, a telescope bag; telescope table, etc.

Telescope bag Telescope bag An adjustable traveling bag consisting of two cases, the larger slipping over the other.

Telescopic sight Tel`e·scop"ic sight` A sight consisting of a small telescope, as on a compass or rifle.

Telescopic, Telescopical Tel`e·scop"ic, Tel`e·scop"ic·al adjective [ Confer French télescopique .] 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. Having the power of extension by joints sliding one within another, like the tube of a small telescope or a spyglass; especially (Machinery) , 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.

Telescopically Tel`e·scop"ic·al·ly adverb In a telescopical manner; by or with the telescope.

Telescopist Te·les"co·pist noun One who uses a telescope. R. A. Proctor.

Telescopy Te·les"co·py noun The art or practice of using or making telescopes.

Teleseism Tel"e·seism noun [ Greek th^le far + ... shock.] A seismic movement or shock far from the recording instrument. -- Tel`e*seis"mic adjective

Teleseme Tel"e·seme noun [ Greek th^le far + ... sign.] A system of apparatus for electric signals providing for automatic transmission of a definite number of different signals or calls, as in connection with hotel annunciators.

Telesm Tel"esm noun [ Arabic tilism . See Talisman .] A kind of amulet or magical charm. [ Obsolete] J. Gregory.

Telesmatic, Telesmatical Tel`es·mat"ic, Tel`es·mat"ic·al adjective Of or pertaining to telesms; magical. J. Gregory.

Telespectroscope Tel`e·spec"tro·scope noun [ Greek ... far off + English spectroscope .] (Astron.) A spectroscope arranged to be attached to a telescope for observation of distant objects, as the sun or stars. Lockyer.

Telestereograph Tel`e·ste"re·o·graph` noun [ Greek th^le far + stereograph .] An instrument for telegraphically reproducing a photograph. -- Tel`e*ste`re*og"ra*phy noun

Telestereoscope Tel`e·ste"re·o·scope noun [ Greek ... far off + English stereoscope .] (Opt.) A stereoscope adapted to view distant natural objects or landscapes; a telescopic stereoscope.

Telestic Te·les"tic adjective [ Greek ... fit for finishing, from ... to finish.] Tending or relating to a purpose or an end. [ R.] Cudworth.

Telestich Te·les"tich noun [ Greek ... the end + ... a line, verse.] A poem in which the final letters of the lines, taken consequently, make a name. Confer Acrostic .

Telethermograph Tel`e·ther"mo·graph noun [ Greek th^le far + thermo- + -graph .] (Physics) (a) A record of fluctuations of temperature made automatically at a distant station. (b) An instrument, usually electrical, making such records.

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