Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • The symbol for the element actinium.
  • abbr. Bible Acts of the Apostles

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Symbol for actinium.
  • n. The Acura Legend.
  • Air-conditioning.
  • Altocumulus clouds.
  • abbr. acetate
  • abbr. acetyl

from the GNU version of the Collaborative International Dictionary of English

  • n. the chemical symbol for actinum, a radioactive element.

Etymologies

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