keysendingn.
/ˈkiːsɛndɪŋ/, U.S. /ˈkiˌsɛndɪŋ/ Telegraphy and Telephony. Now rare.
The use or operation of a keysender.
ΚΠ
1904 Official Gaz. (U.S. Patent Office) 19 Apr. 1924/1 A system of telegraphy comprising a..key sending mechanism.
1938 T. E. Herbert & W. S. Procter Telephony II. ix. 393 Each manual exchange adopting direct 7-digit keysending utilizes a suitable automatic exchange as a routing centre.
1950 J. Atkinson Herbert & Procter's Teleph. (new ed.) II. xvii. 558/2 There are three alternative arrangements of the keysending equipment.
1982 Brit. Patent 2,086,188 1/1 Dialling as used herein is used..so as to cover keysending.
This entry has been updated (OED Third Edition, December 2012; most recently modified version published online March 2022).
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n.1904