Tel`har*mo"ni*um (?), n. [Gr. th^le far + harmolium.]
An instrument for producing music (Tel*har"mo*ny [&?;]), at a distant point or points by means of alternating currents of electricity controlled by an operator who plays on a keyboard. The music is produced by a receiving instrument similar or analogous to the telephone, but not held to the ear. The pitch corresponds with frequency of alternation of current.
© Webster 1913