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tonometer

[toh-nom-i-ter]
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noun
  1. an instrument for measuring the frequencies of tones, as a tuning fork or a graduated set of tuning forks.
  2. any of various physiological instruments for measuring intraocular pressure or blood pressure.
  3. Physical Chemistry. an instrument for measuring vapor pressure.
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Origin of tonometer

First recorded in 1715–25; tono- + -meter
Related formston·o·met·ric [ton-uh-me-trik, toh-nuh-] /ˌtɒn əˈmɛ trɪk, ˌtoʊ nə-/, adjectiveto·nom·e·try, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for tonometer

Historical Examples

  • The (Schiotz) tonometer was used daily for 70 consecutive days and never registered more than 12-14 mm.

    Glaucoma

    Various

British Dictionary definitions for tonometer

tonometer

noun
  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
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Derived Formstonometric (ˌtɒnəˈmɛtrɪk, ˌtəʊ-), adjectivetonometry, noun

Word Origin

C18: from Greek tonos tone + -meter
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
tonometer in Medicine

tonometer

(tō-nŏm′ĭ-tər)
n.
  1. Any of various instruments for measuring pressure or tension, especially one used in tonography.
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Related formsto′no•met′ric (tō′nə-mĕt′rĭk) adj.to•nom′e•try n.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.