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ppb
or p.p.b.
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This shows grade level based on the word's complexity.
(in publishing) paper, printing, and binding.
parts per billion.
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Other definitions for ppb (2 of 2)
PPB
or P.P.B.
(in publishing) paper, printing, and binding.
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use ppb in a sentence
So long as detected levels of carbendazim are low enough, in the range of 10 to 35 ppb, they can stay for sale.