Examples from the Web for monochord
The clavichord retained the box shape of its prototype, the monochord.
How soon keys were added to the monochord, as this measuring instrument was named, cannot positively be ascertained.For Every Music Lover|Aubertine Woodward Moore
And I wonder—did or did not Elena learn to play the monochord?
For determining the correct pitch of the notes of the scale he explains the manner of demonstrating them upon the monochord.A Popular History of the Art of Music|W. S. B. Mathews
One of the instruments which brings the child to producing and recognizing notes is the monochord.Montessori Elementary Materials|Maria Montessori