köken: Transliteration of English capacitor. Originally spelled キャパシター (kyapashitā). As with other imported words ending in long "ā", the final vowel has shortened in more common usage, resulting in the current spelling.
köken: From German Kondensator (“capacitor”), from Latin condensare (“to condense”), from con- (“with”) + densare (“to make thick”), from densus (“dense”). With -átor ending.
capacitor, an electronic component capable of storing electrical energy in an electric field; especially one consisting of two conductors separated by a dielectric