Definition of Actinium in English :
Define Actinium in English
Actinium meaning in English
Meaning of Actinium in English
Pronunciation of Actinium in English
Actinium pronunciation in English
Pronounce Actinium in Englishsee synonyms of actinium
a radioactive element of the actinide series; found in uranium ores
WordNet Lexical Database for English. Princeton University. 2010.
Collins English Dictionary. Copyright © HarperCollins Publishers
Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by Houghton Mifflin Harcourt. All rights reserved.
The American Heritage ® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.