actinoid

Pronunciation

• enPR: ăk'tĭnoid, IPA ^(key): /ˈæktɪnɔɪd/

• Audio (UK)

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Noun

Singular actinoid

Plural actinoids

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

Related words

• actinide
• actinon