Relating to or used in the treatment of disease or injury using electrical currents.
From electro- + therapeutic (from Greek therapeutikos, 'relating to healing'). This variant spelling appears in older medical texts from the 1800s-early 1900s.
This older spelling 'electrotheraputic' (with the 'u') shows how medical terminology was still being standardized—today we'd say 'electrotherapeutic,' but the shift reveals how modern English simplified pronunciation.
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