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| 1. | [ noun ] (chemistry) 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: | atomic_number_84 polonium | |
| Related terms: | metallic_element | |
| 2. | [ noun ] (government) an independent agency of the federal government responsible for mail delivery (and sometimes telecommunications) between individuals and businesses in the United States | |
| Synonyms: | Post_Office_Department united_states_post_office us_post_office Post_Office | |
| Related terms: | federal_department independent_agency post_office | |
| 3. | [ noun ] (military,work) a noncommissioned officer in the navy with a rank comparable to sergeant in the army | |
| Synonyms: | p.o. petty_officer | |
| Related terms: | noncommissioned_officer master-at-arms | |
| 4. | [ noun ] (Italian,geography) a European river; flows into the Adriatic Sea | |
| Synonyms: | Po_River | |
| Related terms: | river Italy | |
| Similar spelling: |
POW Pou poi poe Poa Powe P poyou |
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