Dictionary entry

Leyden jar

Webster's Dictionary 1913

{ Ley″den jar″ (lī″d'n jär″; 277). Ley″den phi″al (fī″al).} (Elec.) A glass jar or bottle used to accumulate electricity. It is coated with tin foil, within and without, nearly to its top, and is surmounted by a brass knob which communicates with the inner coating, for the purpose of charging it with electricity. It is so named from having been invented in Leyden, Holland.