 actinide |
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| 1. | [ noun ] (chemistry) any of a series of radioactive elements with atomic numbers 89 through 103 | |
| Synonyms: | actinon actinoid | |
| Related terms: | group chemical_element | |
| Similar spelling: |
actin actinoid acetanilide acetamide Actinidia acetanilid acetone actinon actinia actinolite actinic acidemia actinian actinium actinism accident acuteness Actinaria accidence actinopod acting action actium Actiniaria acidimetry acetonemia accidental actinal Actinomeris actinometer actinometry acidimetric actinozoan actionable actinic_ray actiniarian actinomyces acetonic |
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