|1.||an instrument for measuring the pitch of a sound, esp one consisting of a set of tuning forks|
|2.||any of various types of instrument for measuring pressure or tension, such as the blood pressure, vapour pressure, etc|
|[C18: from Greek tonos|
tonometer to·nom·e·ter (tō-nŏm'ĭ-tər)
Any of various instruments for measuring pressure or tension, especially one used in tonography.