tonometer
(noun) measuring instrument for measuring tension or pressure (especially for measuring intraocular pressure in testing for glaucoma)
Source: WordNet® 3.1
tonometer (plural tonometers)
An instrument used to measure tension or pressure, especially inside the eye.
• tonograph
Source: Wiktionary
To*nom"e*ter, n. Etym: [Gr. -meter.]
1. (Physics.)
Definition: An instrument for determining the rate of vibrations in tones.
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.
Source: Webster’s Unabridged Dictionary 1913 Edition
2 April 2025
(adjective) secret or hidden; not openly practiced or engaged in or shown or avowed; “covert actions by the CIA”; “covert funding for the rebels”
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