Origin of po

1875–80; probably < French pot (de chambre) chamber pot


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


Symbol, Chemistry.
  1. polonium.


  1. put-out; put-outs.


  1. (in prescriptions) by mouth.

Origin of p.o.

From the Latin word per ōs


  1. parole officer.
  2. petty officer.
  3. postal (money) order.
  4. post office.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for po

delivery, mail, collection, PO, GPO, postmaster

Examples from the Web for po

Contemporary Examples of po

Historical Examples of po

  • Hey, you big Yank, you jest let that po' little conscrip' go!

    The Cavalier

    George Washington Cable

  • You po' dears, yo're hero-ines, now, and hencefo'th fo'evehmo'!

    The Cavalier

    George Washington Cable

  • But in that case, what should they be doing this side of Po?

    The Strolling Saint

    Raphael Sabatini

  • Beyond the Po they too had been awaiting the salvo of artillery that should be their signal to advance.

    The Strolling Saint

    Raphael Sabatini

  • The Pope has already issued an order to Durando not to pass the Po.

British Dictionary definitions for po


noun plural pos
  1. British an informal word for chamber pot

Word Origin for po

C19: from pot 1


the chemical symbol for
  1. polonium


  1. 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)Latin name: Padus


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 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for po


large river in northern Italy, from Latin Padus, a name of Celtic origin.

Online Etymology Dictionary, © 2010 Douglas Harper

po in Medicine


  1. The symbol for the elementpolonium
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

po in Science


  1. The symbol for polonium.


  1. 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 9.20; valence 2, 4. See Periodic Table.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.