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Online Etymology Dictionary

success fail Dec JAN Nov 13 2008 2012 2013 13 captures 14 Sep 2004 - 23 Jun 2016 About this capture COLLECTED BY Organization: Internet Archive The Internet Archive discovers and captures web pages through many different web crawls. At any given time several distinct crawls are running, some for months, and some every day or longer. View the web archive through the Wayback Machine. Collection: Wide Crawl started January 2012 Web wide crawl with initial seedlist and crawler configuration from January 2012 using HQ software. TIMESTAMPS

"radioactive metallic element," 1899, from Fr. radium (P. Curie et al., 1898), formed in Mod.L. from L. radius "ray" (see radius); so called for its power of emitting energy in the form of rays.