Definitions from Wiktionary (actinide)
▸ noun: (chemistry) Any of the 15 radioactive elements of the periodic table from actinium to lawrencium that are positioned under the lanthanides, to which they have similar chemistry.
▸ noun: (chemistry) Any of the 14 elements from actinium to nobelium (lawrencium is excluded by some authors as it is a d-block rather than an f-block element).
▸ noun: (chemistry) (dated) Any of the 14 elements from thorium to lawrencium (actinium having been mistakenly excluded because it was thought to be a d-block element in the past).
▸ Also see actinide
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▸ noun: (chemistry) Any of the 15 radioactive elements of the periodic table from actinium to lawrencium that are positioned under the lanthanides, to which they have similar chemistry.
▸ noun: (chemistry) Any of the 14 elements from actinium to nobelium (lawrencium is excluded by some authors as it is a d-block rather than an f-block element).
▸ noun: (chemistry) (dated) Any of the 14 elements from thorium to lawrencium (actinium having been mistakenly excluded because it was thought to be a d-block element in the past).
▸ Also see actinide
Opposite:
Types:
Adjectives:
▸ Words similar to actinides
▸ Usage examples for actinides
▸ Idioms related to actinides
▸ Wikipedia articles (New!)
▸ Popular adjectives describing actinides
▸ Words that often appear near actinides
▸ Rhymes of actinides
▸ Invented words related to actinides