Webster’s Revised Unabridged Dictionary · 1913
Electrophorus
E·lec′troph′o·rus, n.; pl. Electrophori (#). [NL., fr. combining form electro- + Gr. φέρειν to bear.] (Physics) An instrument for exciting electricity, and repeating the charge indefinitely by induction, consisting of a flat cake of resin, shellac, or ebonite, upon which is placed a plate of metal.