Webster’s Revised Unabridged Dictionary · 1913
Ozonometer
O′zo·nom′e·ter, n. [Ozone + -meter.] An instrument for ascertaining the amount of ozone in the atmosphere, or in any gaseous mixture. Faraday.
Webster’s Revised Unabridged Dictionary · 1913
O′zo·nom′e·ter, n. [Ozone + -meter.] An instrument for ascertaining the amount of ozone in the atmosphere, or in any gaseous mixture. Faraday.