Looking for the meaning of the word ACTINIDE in English for both noun and verb forms from the Oxford Dictionary? Below, you can explore all possible meanings and definitions of ACTINIDE with sentence examples. You can also use the “AUDIO PRONUNCIATION” track to check the correct pronunciation in British English.
Word: Actinide
Speech Type: Noun
1940s: from actinium+ -ide, on the pattern of lanthanide
ˈaktɪnʌɪd
any of the series of fifteen metallic elements from actinium (atomic number 89) to lawrencium (atomic number 103) in the periodic table. They are all radioactive, the heavier members being extremely unstable and not of natural occurrence.
Short Definition:any of series of fifteen metallic elements from actinium atomic number 89 to lawrencium atomic number 103
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