A banjo dulcimer is an Appalachian dulcimer modified by adding a vibrating membrane to the body of the instrument. This changes the tone and volume of the instrument, operating on the same principle as the banjo.
Homer Ledford, a luthier during the early part of the revival of the dulcimer, built several banjo dulcimers, which he called the dulcijo (portmanteau of "dulcimer" and "banjo").[1]