Synonym: exposure meter, light meter. Similar words: interferometer, odometer, barometer, thermometer, kilometer, nanometer, manometer, micrometer. Meaning: [fəʊ'tɑmɪtə(r) /-'tɒ-] 
n. 1. measuring instrument for measuring the luminous intensity of a source by comparing it (visually or photoelectrically) with a standard source 2. photographic equipment that measures the intensity of light.
n. 1. measuring instrument for measuring the luminous intensity of a source by comparing it (visually or photoelectrically) with a standard source 2. photographic equipment that measures the intensity of light. 
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1. High performance, microprocessor controlled photometer combines easy operation with highly accurate results.
2. Visual photometer is a simple instrument used in measuring sky brightness.
3. We must carry out the measuremnt with a photometer on an airplane.
4. Photometer for measuring the directional light distribution characteristics of sources or luminaires.
5. This paper describes an integrating photometer built at Purple Mountain Observatory recently.
6. Visual photometer is a simple instrument with measuring accuracy of ~10 % ( 0.1 mag ).
7. A new light - emitting diode ( LED ) sun photometer used as spectrally selective photo detectors is developed.
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8. The blood potassium types were investigated in 91 Chaidamu down - producing goats by means of flame photometer.
9. The test observations and initial analysis of a near infrared photometer used with the 1 -meter reflecting telescope at Yunnan Observatory are given.
10. In this article, the phenol-sulfuric acid method combined with caramelization - grating photometer method is used to determine and monitor the content of sugar in algae solution.
11. In this paper, the design of complete and mechanical structure for the composite automatic distribution photometer is described.
12. The paper erects math model of determined ammomial nitrogen compound uncertainty by prismatic photometer.
More similar words: interferometer, odometer, barometer, thermometer, kilometer, nanometer, manometer, micrometer, tachometer, hygrometer, hydrometer, anemometer, speedometer, chronometer, photophobia, galvanometer, spectrometer, sphygmomanometer, photo, photon, dichotomy, photocopy, photocell, telephoto, photostat, photosphere, photograph, photogenic, take a photo, dichotomous.