Meaning: でんこうn. (Kanji=電光) lightning, flash ir streak of light in the sky caused by the discharge of an electric spark in a thundercloudadj. (Kanji=電効) electronic, of or pertaining to electronics; of or pertaining to electronsn. (Kanji=電工) electrician, person who installs or maintains electrical equipment; electrical engineering, study of the practical uses of electricity