Definitions

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

  • n. An instrument used to measure thermal expansion and dilation in solids and liquids.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. An instrument used to measure the expansion of solids and liquids when heated, or when subjected to some other physical process

from the GNU version of the Collaborative International Dictionary of English

  • n. An instrument for measuring the dilatation or expansion of a substance, especially of a fluid.

from The Century Dictionary and Cyclopedia

  • n. An instrument for the determination of the changes of volume of a substance or for the measurement of its linear expansion.

Etymologies

dilate + -meter.
(American Heritage® Dictionary of the English Language, Fourth Edition)

Examples

  • LEMON: To understand the problem with the current armor, Speyer built an instrument called the differential dilatometer.

    CNN Transcript May 12, 2007

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