cometarium

== English == === Etymology === Latin === Pronunciation === (Received Pronunciation) IPA(key): /ˌkɒmɪˈtɛəɹi.əm/ (General American) IPA(key): /ˌkɑməˈtɛɹi.əm/ Rhymes: -ɛəɹiəm === Noun === cometarium (plural cometaria) (astronomy) An instrument intended to represent the revolution of a comet around the Sun. === References === “cometarium”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.