Actinium

usgb/ækˈtɪniəm/
noun

A soft, silvery-white radioactive metal. It's one of the elements in the periodic table.

Scientists discovered small amounts of actinium in uranium ores.
Visual representation of "actinium" - A soft, silvery-white radioactive metal. It's one of the elements in the periodic table.

Often appears as...

  • actinium-225
  • actinium series

Usage tips

Technical

Academic

Definition 1 of 1
Visual representation of "actinium"
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Science Context

Actinium is used in scientific or academic contexts, not common conversation.

Illustration for Science Context
The researcher measured the actinium content in the sample.
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Radioactivity Caution

Actinium is radioactive, so examples can involve radioactivity safety or nuclear science discussions.

Illustration for Radioactivity Caution
Wearing protective gear is essential when handling actinium in the lab.
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Specialized Vocab

Actinium is part of specialized vocabulary used by professionals in fields like chemistry and physics.

Illustration for Specialized Vocab
Marie Curie's work involved the study of radioactive elements like actinium.
Visual representation of the word "Actinium"

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