Actinoid has 4 different meanings across 2 categories:
Noun
· Adjective
Noun
1
any of a series of radioactive elements with atomic numbers 89 through 103
Adjective
1
having a radial form
"starfish are actinoid--that is, they are radially symmetrical"
2
Having the form of rays; radiated, as in the species of the family Actiniidae.
Broader Terms (hypernyms)