pulse per second.
a second or additional postscript.
Origin of P.P.S.
From the Latin word post postscrīptum
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for pps
Historical Examples of pps
This appears a mistake (f. 168 foot, and note on Pps daughters).The Bbur-nma in English
Babur, Emperor of Hindustan
I refer my learned opponents to Wharton's Criminal Treatise, at pps.
parliamentary private secretary
Also: pps post postscriptum
Word Origin for PPS
(for sense 2) Latin: after postscript; additional postscript
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