(?), n. [Gr. a stretching, a tone + -meter.] 1. (Physics.) An instrument for determining the rate of vibrations in tones.
[1913 Webster]

2. (Physiol.) (a) An apparatus for studying and registering the action of various fluids and drugs on the excised heart of lower animals. (b) An instrument for measuring tension, esp. that of the eyeball.
[1913 Webster]


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Thu 03rd December 2020