[ra-dee-sawn] /ræ diˈsɔ̃/
Pierre Esprit [es-pree] /ɛs pri/ (Show IPA), 1636?–1710? French fur trader and explorer in Canada.
[rey-dee-uh m] /ˈreɪ di əm/ noun 1. Chemistry. a highly radioactive metallic element whose decay yields gas and alpha rays. Symbol: Ra; atomic weight: 226; atomic number: 88. 2. a lustrous rayon or silk fabric constructed in plain weave and used in women’s apparel, lining, and drapery. /ˈreɪdɪəm/ noun 1. n. radioactive metallic element, 1899, […]
noun, Chemistry. 1. a substance, formed by decay of radon, that gives rise to radium B.
noun, Chemistry. 1. an isotope of lead, formed by decay of radium A, that gives rise to radium C, which is an isotope of bismuth, from which radium D, radium E, and radium F, or polonium 210, are derived.
noun, Chemistry. 1. (formerly) .