tonometer

noun
to·nom·e·ter | \tō-ˈnä-mə-tər \

Definition of tonometer 

1 : an instrument or device for determining the exact pitch or the vibration rate of tones

2 : an instrument for measuring tension or pressure and especially intraocular pressure

Other Words from tonometer

tonometry \tō-ˈnä-mə-trē \ noun

First Known Use of tonometer

1725, in the meaning defined at sense 1

History and Etymology for tonometer

Greek tonos tone + English -meter

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The first known use of tonometer was in 1725

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More Definitions for tonometer

tonometer

noun
to·nom·e·ter | \tō-ˈnäm-ət-ər \

Medical Definition of tonometer 

: an instrument for measuring tension or pressure and especially intraocular pressure

Other Words from tonometer

tonometric \ˈtō-nə-ˈme-trik, ˌtän-ə- \ adjective
tonometry \tō-ˈnäm-ə-trē \ noun plural tonometries

More from Merriam-Webster on tonometer

Britannica.com: Encyclopedia article about tonometer

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