po : Dictionary / Wörterbuch (BEOLINGUS, TU Chemnitz)

English Dictionary: po	by the DICT Development Group
2 results for po
From WordNet (r) 3.0 (2006) [wn]:
Po n 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 Synonym(s): polonium, Po, atomic number 84 a noncommissioned officer in the Navy or Coast Guard with a rank comparable to sergeant in the Army Synonym(s): petty officer, PO, P.O. a European river; flows into the Adriatic Sea Synonym(s): Po, Po River an independent agency of the federal government responsible for mail delivery (and sometimes telecommunications) between individuals and businesses in the United States Synonym(s): United States Post Office, US Post Office, Post Office, PO
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Phosphoryl \Phos"phor*yl\, n. [Phosphorus + -yl.] (Chem.) The radical {PO}, regarded as the typical nucleus of certain compounds.