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p.s.

  1. postscript.
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P.S.

  1. passenger steamer.
  2. permanent secretary.
  3. postscript.
  4. Privy Seal.
  5. Theater. prompt side.
  6. Public School.
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P&S

  1. purchase and sales (of stocks in a brokerage house).
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Word Origin and History for p.s.

P.S.

1610s, abbreviation of Latin post scriptum (see postscript).

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Online Etymology Dictionary, © 2010 Douglas Harper