Looking for the meaning of the word ACTINIUM in English for both noun and verb forms from the Oxford Dictionary? Below, you can explore all possible meanings and definitions of ACTINIUM with sentence examples. You can also use the “AUDIO PRONUNCIATION” track to check the correct pronunciation in British English.
Word: Actinium
Speech Type: Noun
Etymology:
early 20th century: from Greek aktis, aktin- ‘ray’ + -ium
Audio Pronunciation:
Phonetic Spelling:
akˈtɪnɪəm
Dialects: British English
Definition:
the chemical element of atomic number 89, a radioactive metallic element of the actinide series. It is rare in nature, occurring as an impurity in uranium ores.
Short Definition:chemical element of atomic number 89, radioactive metallic element of actinide series
Variant Forms:
- Ac
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