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1851 Ann. Sci. Discov. 119 Electro-thermic telegraph.—Mr. W. S. Thomas, of Norwich, N.Y., has patented a new telegraph, which is an application of heat as a substitute for electricity in recording telegraphic communications.

1899 Engin. Mag. June 495/1 Electrothermic methods have been in use for a number of years in connection with the production of aluminium, sodium, [etc.].

1929 Amer. Jrnl. Surg. 6 460/2 The coagulated tissue is removed..by the electrothermic cutting current.

1959 Jrnl. Iron & Steel Inst. 191 197/2 Results of electro~thermic smelting tests carried out on these ores.

2005 Jrnl. Orthopaedic Res. 23 527/1 Generally, two major analytical techniques were used, electrothermic atomic absorption spectrometry..and induction coupled plasma-mass spectrometry.