actinide

Pronunciation

• enPR: ăk'tĭnīd, IPA ^(key): /ˈæktɪnaɪd/

• Audio (UK)

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Noun

Singular actinide

Plural actinides

1. (countable) An actinide is a chemical element with an atomic number between 89 and 103.
   • Synonyms: actinoid and actinon

Related words

• actinoid
• actinon