E-lĕc'tro-scōpe, n.

n. [Fr. électroscope, from Lat. electrum, Gr. ἤλεκτρον, amber (for electricity), and σκοπός, spying, from σκέπτεσθαι, to look carefully, to spy.] An instrument for detecting changes in the electric state of bodies, or the species of electricity present, as by means of pith-balls, &c.; an electrometer.