po

Dictionary.com Unabridged

Po

[poh]
noun
a river in Italy, flowing E from the Alps in the NW to the Adriatic. 418 miles (669 km) long.
Ancient Padus.

Po

Symbol, Chemistry.

po.

Baseball.
put-out; put-outs.

P.O.

1.
parole officer.
2.
petty officer.
3.
postal (money) order.
4.
post office.

p.o.

(in prescriptions) by mouth.

Origin:
< Latin per ōs

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
po (pəʊ)
 
n , pl pos
(Brit) an informal word for chamber pot
 
[C19: from pot1]

Po1
 
the chemical symbol for
polonium

Po2 (pəʊ)
 
n
Latin name: Padus a river in N Italy, rising in the Cottian Alps and flowing northeast to Turin, then east to the Adriatic: the longest river in Italy. Length: 652 km (405 miles)

PO
 
abbreviation for
1.  Post Office
2.  Personnel Officer
3.  petty officer
4.  Pilot Officer
5.  Also: p.o. postal order

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

Po
large river in northern Italy, from L. Padus, a name of Celtic origin.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

Po
The symbol for the element polonium.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
Po  
The symbol for 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.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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American Heritage
Abbreviations & Acronyms
po
putout
Po
polonium
PO
  1. personnel officer

  2. petty officer

  3. physician organization

  4. piss off

  5. postal order

  6. post office

  7. purchase order

p.o.
Latin per os (by mouth)
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Encyclopedia Britannica
Encyclopedia

po

people of northwestern Yunnan province, southwest China. Minjia is the Chinese (Pinyin) name for them; they call themselves Bai or Bo in their own language, which has been classified within the Yi group of Tibeto-Burman languages. Until recently the language was not written. It contains many words borrowed from Chinese but is itself a non-Chinese, tonal, polysyllabic language with a markedly different grammatical structure

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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