noun
- Chemistry) a series of 15 radioactive elements with increasing atomic numbers from actinium to lawrencium. (.
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). actinide series. Retrieved September 24, 2026, from http://smartdefine.org/actinide_series/definitions/1247594 |
| Chicago | WordNet. 2010. "actinide series" http://smartdefine.org/actinide_series/definitions/1247594 (accessed September 24, 2026). |
| Harvard | WordNet 2010, actinide series, Smart Define, viewed 24 September, 2026, <http://smartdefine.org/actinide_series/definitions/1247594>. |
| MLA | WordNet. "actinide series" 23 October 2010. Web. 24 September 2026. <http://smartdefine.org/actinide_series/definitions/1247594> |