What is the meaning of actinium?

noun

  • A radioactive element of the actinide series; found in uranium ores.
WordNet 3.0 © 2006 by Princeton University
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APAWordNet. (2010). Actinium. Retrieved September 24, 2026, from http://smartdefine.org/actinium/definitions/1247598
ChicagoWordNet. 2010. "Actinium" http://smartdefine.org/actinium/definitions/1247598 (accessed September 24, 2026).
HarvardWordNet 2010, Actinium, Smart Define, viewed 24 September, 2026, <http://smartdefine.org/actinium/definitions/1247598>.
MLAWordNet. "Actinium" 23 October 2010. Web. 24 September 2026. <http://smartdefine.org/actinium/definitions/1247598>
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