radium B2 Topic:Health & Medicine US /ˈɹeɪ.di.əm/ UK /ˈɹeɪ.dɪ.əm/ See IPA manual Freq #28683 Meanings 1 noun A radioactive metal element (symbol Ra) that glows and was once used in medicine. Marie Curie became famous for her discovery of radium. Thesaurus Word family Derived forms eka-radiumnonradiumradateradiferousradioberadiumiseradiumizationradiumizeradiumizerradiumlikeradiumtherapyradon Related forms radiationradioactiveradioactivityradiusray Common collocations radium therapy Noun + noun Etymology AI details Borrowed from French radium, from rad(ioactif) (“radioactive”) + -ium (suffix used to form the names of metallic elements). radium French View etymology graph -> Topics Health & Medicine External links Cambridge Dictionary Wiktionary Google Images # radium **Type:** Word **Level:** B2 **Part of speech:** noun **IPA (US):** /ˈɹeɪ.di.əm/ **IPA (UK):** /ˈɹeɪ.dɪ.əm/ **Frequency rank:** 28683 ## Meanings 1. A radioactive metal element (symbol Ra) that glows and was once used in medicine. ## Examples - Marie Curie became famous for her discovery of radium. ## Derived Forms - eka-radium - nonradium - radate - radiferous - radiobe - radiumise - radiumization - radiumize - radiumizer - radiumlike - radiumtherapy - radon ## Related Forms - radiation - radioactive - radioactivity - radius - ray ## Roots and Affixes - Root: radium ## Etymology Borrowed from French radium, from rad(ioactif) (“radioactive”) + -ium (suffix used to form the names of metallic elements). ## AI Etymology Radium is borrowed from French radium, from rad(ioactif) (“radioactive”) + -ium (suffix used to form the names of metallic elements). Modern senses include a radioactive metal element (symbol Ra) that glows and was once used in medicine.. The wider word family includes derivatives such as eka-radium, nonradium, radate, radiferous, radiobe, and radiumise and related forms such as radiation, radioactive, radioactivity, and radius. ## Topics - Health & Medicine markdown