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actinoid meaning and definition

Definition and meaning of actinoid at MeaningMonkey.org. actinoid meaning and definition in the English Dictionary.

ACTINOID noun

Definition of actinoid (noun)

  1. any of a series of radioactive elements with atomic numbers 89 through 103

ACTINOID adjective

Definition of actinoid (adjective)

  1. having a radial form
    • "starfish are actinoid--that is, they are radially symmetrical"
Source: Princeton University Wordnet
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