Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. An instrument for detecting and measuring fluorescence.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. An instrument used to detect, and measure fluorescence

from The Century Dictionary and Cyclopedia

  • n. An apparatus for the determination of fluorin by the action of sulphuric acid upon a mixture of the substance with powdered quartz, the volume of the silicon tetrafluoride evolved being measured.

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