ozonometer

== English == === Etymology === From ozone +‎ -o- +‎ -meter. === Pronunciation === IPA(key): /əʊˈzɒnəˌmiːtə(ɹ)/ === Noun === ozonometer (plural ozonometers) An instrument for measuring how much ozone is present in a mixture of gases. ==== Related terms ==== ozonometric ozonometry === References === “ozonometer”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.