tonometer

Noun

to=nom=e=ter

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]

tonometer, n.
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

For further exploring for "tonometer" in Webster Dictionary Online

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