actinoid definition

  • adjective:
    • Having a radial form, as a starfish.
    • Having the kind of rays; radiated, as in the species of your family Actiniidae.
    • obtaining the form of rays; radiated, as an actinia.
    • having a radial type
  • noun:
    • actinide
    • some of a few radioactive elements with atomic numbers 89 through 103
  • others:
    • getting the form of rays; resembling a starfish; conspicuously radiate: because, the actinoid form of echinoderms.

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