from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. An instrument for measuring how much ozone is present in a mixture of gases.

from the GNU version of the Collaborative International Dictionary of English

  • n. An instrument for ascertaining the amount of ozone in the atmosphere, or in any gaseous mixture.

from The Century Dictionary and Cyclopedia

  • n. A scale of tints with which ozonic test-papers are compared in order to determine the relative amount of ozone in the air.


Sorry, no etymologies found.



Log in or sign up to get involved in the conversation. It's quick and easy.