Actinoid

/ˈæktɪnɔɪd/ adj, noun

adj, noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    actinide
  2. 2
    any of a series of radioactive elements with atomic numbers 89 through 103 wordnet
Adjective
  1. 1
    Having the form of rays; radiated, as in the species of the family Actiniidae.
Adjective
  1. 1
    having a radial form wordnet

Etymology

From actin- + -oid.

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