HyperDic

English > 2 senses of the word actinoid:
ADJECTIVEallactinoidhaving a radial form
NOUNsubstanceactinoid, actinide, actinonany of a series of radioactive elements with atomic numbers 89 through 103
English > actinoid: 2 senses > adjective 1
MeaningHaving a radial form.
Example"starfish are actinoid--that is, they are radially symmetrical"
Broaderactinomorphic, actinomorphouscapable of division into symmetrical halves by any longitudinal plane passing through the axis
English > actinoid: 2 senses > noun 1, substance
MeaningAny of a series of radioactive elements with atomic numbers 89 through 103.
Synonymsactinide, actinon
Broadergroup, groupingAny number of entities (members) considered as a unit

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