[Gk. tele, far; and graphein, to write.] Stretched wires along which messages are sent by electricity. (See Electric Telegraph.) The messages are given by a pointer in the Wheatstone, by a fillet of paper in Hughes's, by dots and dashes in Morse's, and by symbols in Bain's system.
A form of telegraph, invented by Prof. Elisha Gray, by which writing and drawings can be transmitted and reproduced in fac simile.