ELECTRUM Meaning of ELECTRUM in English [ ɪ'lɛktrəm ]■ noun an alloy of gold with at least 20 per cent of silver, used for jewellery.OriginME: via L. from Gk ēlektron 'amber, ~'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004