Definition of ppb in English:

ppb

Syllabification: ppb

Entry from US English dictionary

(also p.p.b.)

abbreviation

1(In publishing) paper, printing, and binding.
1.1Parts per billion.

Definition of ppb in:

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Nearby words

Word of the day demoralize
Pronunciation: dɪˈmɒrəlʌɪz
verb
cause (someone) to lose confidence or hope