Skip to definition.
Get the FREE one-click dictionary software for Windows or the iPhone/iPad and Android apps


Adjective: actinoid  'ak-ti,noyd
  1. Having a radial form
    "starfish are actinoid--that is, they are radially symmetrical"
Noun: actinoid  'ak-ti,noyd
  1. Any of a series of radioactive elements with atomic numbers 89 through 103
    - actinide, actinon

Derived forms: actinoids

See also: actinomorphic, actinomorphous

Type of: group, grouping

Encyclopedia: Actinoid

Nearest

actinide series
Actinidia
Actinidia arguta
Actinidia chinensis
Actinidia deliciosa
Actinidia polygama
Actinidiaceae
Actiniopteris
actinism
actinium
actinoid
actinolite
Actinomeris
Actinomeris alternifolia
actinometer
actinometric
actinometrical
actinometry
actinomorphic
actinomorphous
actinomyces