| a river in Italy, flowing E from the Alps in the NW to the Adriatic. 418 mi. (669 km) long. |
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piss off
and PO
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Po
The symbol for the element polonium.
| polonium (pə-lō'nē-əm) Pronunciation Key
Symbol Po A very rare, naturally radioactive, silvery-gray or black metalloid element. It is produced in extremely small amounts by the radioactive decay of radium or the bombardment of bismuth or lead with neutrons. Atomic number 84; melting point 254°C; boiling point 962°C; specific gravity 9.32; valence 2, 4. See Periodic Table. |