ppb

or p.p.b.

(in publishing) paper, printing, and binding.
parts per billion.

PPB

or P.P.B.

(in publishing) paper, printing, and binding.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for ppb

Contemporary Examples of ppb

So long as detected levels of carbendazim are low enough, in the range of 10 to 35 ppb, they can stay for sale.
OJ Scare Shows Holes in FDA’s Food Screening Process
Daniel Stone
January 13, 2012

ppb in Medicine

ppb

abbr.

parts per billion

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