We don't have synonyms for monochord yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are notochord, manichord and monochorea.
(n) :
A musical instrument for experimenting with the mathematical relations of musical sounds, consisting of a single string stretched between two bridges, one or both of which can be moved, and which stand upon a graduated rule for the purpose of changing and measuring the length of the part of the string between them.
(n) :
A bass note on a piano that has a single string.
(n) :
A musical instrument for experimenting with the mathematical relations of musical sounds, consisting of a single string stretched between two bridges, one or both of which can be moved, and which stand upon a graduated rule for the purpose of changing and measuring the length of the part of the string between them.
(n) :
A bass note on a piano that has a single string.