電でんマでんマMeanings1nounelectric massagerabbreviationslang›Slang abbreviation of 電気マッサージ器. Used in casual conversation, often with a slightly playful or informal tone.See also: 電気マッサージ器肩かたが凝こったから電でんマを買かおうかな。My shoulders are stiff, so maybe I'll buy an electric massager.2nounelectronic moneyabbreviationslang›Slang abbreviation of 電子マネー. Used in casual contexts, especially among younger speakers or in tech-savvy circles.See also: 電子マネー最さい近きんは電でんマで支