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Tel"egraph
(), n.[Gr. far, far off (cf. Lith. toli) + -graph: cf. F. tlgraphe. See Graphic.] An apparatus, or a process, for communicating intelligence rapidly between distant points, especially by means of preconcerted visible or audible signals representing words or ideas, or by means of words and signs, transmitted by electrical action.
The instruments used are classed as indicator, type-printing, symbol-printing, or chemical-printing telegraphs, according as the intelligence is given by the movements of a pointer or indicator, as in Cooke & Wheatstone's (the form commonly used in England), or by impressing, on a fillet of paper, letters from types, as in House's and Hughe's, or dots and marks from a sharp point moved by a magnet, as in Morse's, or symbols produced by electro-chemical action, as in Bain's. In the offices in the United States the recording instrument is now little used, the receiving operator reading by ear the combinations of long and short intervals of sound pro
Tel"egraph
(), v. t.[imp. & p. p.Telegraphed (); p. pr. & vb. n.Telegraphing ().] [F. tlgraphier.] To convey or announce by telegraph.
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