noun Etymology: Greek tonos tone + English -meter Date: 1725 an instrument or device for determining the exact pitch or the vibration rate of tones, an instrument for measuring tension or pressure and especially intraocular pressure, tonometry noun
TONOMETER
Meaning of TONOMETER in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012