†(a) a wire of the electric telegraph, a telegraph wire (obsolete); (b) a wire or cable carrying an electric current, esp. as part of the electricity…

A tool or instrument. In telegraphy: a kind of relay having a V-shaped lever whose movements resemble the pecking motion of a bird. Now rare.

A telegraphic device which enables the communications or signals to be read by sound.

= electromotograph n. at electro-, comb._form affix 1.

the metal point which makes contact in a telegraphic-apparatus.

An apparatus incorporating two insulated wires wound together so as to combine features of a capacitor and an induction coil, by means of which a…

Telephony. = phonopore, n. Obsolete.

An instrument or appliance for separating. Telegraphy. (See quot. 1891.)

an apparatus for syntonizing.

an electrical device used in the First World War (1914–18) to generate vibrations in a coded pattern to be transmitted through the ground and picked…