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.
Polish: Po, polon
A noncommissioned officer in the Navy or Coast Guard with a rank comparable to sergeant in the Army.
A European river; flows into the Adriatic Sea.
synonym: Po River.
An independent agency of the federal government responsible for mail delivery (and sometimes telecommunications) between individuals and businesses in the United States.
Dutch: P.T.T., post, postbedrijf, posterijen, postkantoor, PTT
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