| CAPNOMETER | • capnometer n. A medical instrument that measures carbon dioxide levels in the exhaled air of patients on ventilators… | 
| CLINOMETER | • clinometer n. An apparatus for measuring a vertical angle, a slope, or the height of a large object (e.g. a tree). • CLINOMETER n. an instrument for measuring the incline (slope) of a surface.
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| CYANOMETER | • cyanometer n. An instrument for measuring the intensity of blue colour by comparing it against a set of reference shades. • CYANOMETER n. instrument for measuring blueness of the sky or ocean.
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| ECONOMETER | • ECONOMETER n. a device in a car that informs the driver of how much fuel they are consuming. | 
| ICONOMETER | • iconometer n. (Photography, historical) An early form of viewfinder. • ICONOMETER n. an instrument for finding the size of an object by measuring its image.
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| MANOMETERS | • manometers n. Plural of manometer. • MANOMETER n. an instrument for measuring the pressure of a liquid or gas.
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| MONOMETERS | • monometers n. Plural of monometer. • MONOMETER n. a rhythmic series, consisting of a single meter.
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| NANOMETERS | • nanometers n. Plural of nanometer. • NANOMETER n. a billionth of a metre, also NANOMETRE.
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| OENOMETERS | • oenometers n. Plural of oenometer. • OENOMETER n. an instrument for measuring alcoholic strength of wine.
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| PHONOMETER | • phonometer n. An instrument for measuring sounds. • PHONOMETER n. an instrument for measuring sound levels, also PHONMETER.
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| PLANOMETER | • planometer n. A flat, metal plate used for estimating the flatness of a machined part; a surface plate. • PLANOMETER n. an instrument for gauging or testing the flatness of a plane surface.
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| PYCNOMETER | • pycnometer n. (Physics, metrology) A vessel of precisely known volume used by weighing to determine the specific gravity… • PYCNOMETER n. an instrument for measuring specific gravity or density, also PYKNOMETER.
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| PYKNOMETER | • pyknometer n. Alternative form of pycnometer. • PYKNOMETER n. an instrument for measuring specific gravity or density, also PYCNOMETER.
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| SONOMETERS | • sonometers n. Plural of sonometer. • SONOMETER n. a musical instrument having only one string, aka monochord.
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| TONOMETERS | • tonometers n. Plural of tonometer. • TONOMETER n. an instrument used to measure the pitch of musical tones.
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| URINOMETER | • urinometer n. A hydrometer used to measure the specific gravity of urine. • URINOMETER n. an instrument for measuring the specific gravity of urine.
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