noun
- A radioactive metallic element that is similar to tellurium and bismuth; occurs in uranium ores but can be produced by bombarding bismuth with neutrons in a nuclear reactor.
- synonyms: polonium, atomic number 84
- A noncommissioned officer in the Navy or Coast Guard with a rank comparable to sergeant in the Army.
- synonyms: petty officer, P. O.
- A European river; flows into the Adriatic Sea.
- synonyms: Po River
- An independent agency of the federal government responsible for mail delivery (and sometimes telecommunications) between individuals and businesses in the United States.
- synonyms: United States Post Office, US Post Office, Post Office
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). Po. Retrieved September 20, 2026, from http://smartdefine.org/po/definitions/1227315 |
| Chicago | WordNet. 2010. "Po" http://smartdefine.org/po/definitions/1227315 (accessed September 20, 2026). |
| Harvard | WordNet 2010, Po, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/po/definitions/1227315>. |
| MLA | WordNet. "Po" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/po/definitions/1227315> |