tonometerPronunciation: /tə(ʊ)ˈnɒmɪtə/Definition of tonometer noun 1a tuning fork or other instrument for measuring the pitch of musical tones. 2an instrument for measuring the pressure in a part of the body, such as the eyeball (to test for glaucoma) or a blood vessel. Origin: early 18th century: from Greek tonos (see tone) + -metertonometer in other Oxford dictionaries Definition of tonometer in the US English dictionary
