Word Study
tonometer
CIDE DICTIONARY
tonometer, n. [Gr. a stretching, a tone + -meter.].
- An instrument for determining the rate of vibrations in tones. [1913 Webster]
- An apparatus for studying and registering the action of various fluids and drugs on the excised heart of lower animals. [1913 Webster]
OXFORD DICTIONARY
tonometer, n.
1 a tuning-fork or other instrument for measuring the pitch of tones.
2 an instrument for measuring the pressure of fluid.
1 a tuning-fork or other instrument for measuring the pitch of tones.
2 an instrument for measuring the pressure of fluid.
Etymology
formed as TONE + -METER
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