actinoid

Pronunciation

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

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