P.SS.

or p.ss.

postscripts.

Origin of P.SS.

From the Latin word postscrīpta

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Examples from the Web for pss

In the Trito-Isaiah during the post-exilian period, and in such psalm literature as Pss.
Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 2|Various

British Dictionary definitions for pss

PSS

pss.

abbreviation for

postscripts

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