protoactinium


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protoactinium

(ˌprəʊtəʊækˈtɪnɪəm)
n
(Elements & Compounds) the former name of protactinium
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.protoactinium - a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into leadprotoactinium - a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead
metal, metallic element - any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
References in periodicals archive ?
Furthermore, he reveals singular ignorance in that he does not appear to know that the two daughter isotopes of U-238, namely Protoactinium 234m and Thorium 234, which are both high energy beta emitters, are in equilibrium in all U-238 material.
In a unique instance of double embedment, there is acTINium and protoACTINIUM.
Newspapers, magazines, news services and radio broadcasters were soon ordered not to mention atomic power, cyclotrons, betatrons, fission, uranium, deuterium, protoactinium and thorium.