 actinium |
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| 1. | [ noun ] (chemistry) a radioactive element of the actinide series; found in uranium ores | |
| Synonyms: | atomic_number_89 Ac | |
| Related terms: | chemical_element uranium_ore | |
| Similar spelling: |
actium actin actinism acetum Actinia actinic actinon actinian actinide Actinidia Actinaria action acting acetonuria actinolite acidimetry acetonemia Actiniaria actinal acetone actiniarian actinic_ray actinomycin actinozoan acidimetric Actinomeris actinometer actinomyces actinometry actinoid acetonic |
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