tetrabarium

== English == === Etymology === From tetra- +‎ barium. === Pronunciation === (Received Pronunciation) IPA(key): /ˌtɛtɹəˈbɛəɹi.əm/ (General American) IPA(key): /ˌtɛtɹəˈbɛɹi.əm/ Rhymes: -ɛəɹiəm === Noun === tetrabarium (uncountable) (chemistry, in combination) Four barium atoms or cations in a molecule (Ba4)