noun
- A metric unit of length equal to one quadrillionth of a meter.
- synonyms: femtometer, femtometre
- Italian nuclear physicist (in the United States after 1939) who worked on artificial radioactivity caused by neutron bombardment and who headed the group that in 1942 produced the first controlled nuclear reaction (1901-1954. ).
- synonyms: Enrico Fermi
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). fermi. Retrieved September 22, 2026, from http://smartdefine.org/fermi/definitions/1233637 |
| Chicago | WordNet. 2010. "fermi" http://smartdefine.org/fermi/definitions/1233637 (accessed September 22, 2026). |
| Harvard | WordNet 2010, fermi, Smart Define, viewed 22 September, 2026, <http://smartdefine.org/fermi/definitions/1233637>. |
| MLA | WordNet. "fermi" 23 October 2010. Web. 22 September 2026. <http://smartdefine.org/fermi/definitions/1233637> |