ppb

¹ American  

Or p.p.b.

1. (in publishing) paper, printing, and binding.

2. parts per billion.

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PPB ² American  

Or P.P.B.

1. (in publishing) paper, printing, and binding.

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Example Sentences

Measurements show that atmospheric methane rose by 55 parts per billion between 2019 and 2023, reaching a record level of 1921 ppb in 2023.

From Science Daily

The fastest growth occurred in 2021, when methane levels increased by nearly 18 ppb.

From Science Daily

PPB had said that the outcome was determined by a random number generator, which had said she had only won the daily jackpot, but an error affected the animations of the game and showed her the wrong result.

From BBC

In one instance from June 2023, hydrogen sulfide reached a one-hour average of 64 ppb — more than double California’s standard — when Hyperion operators had turned off pollution control devices, or scrubbers, for maintenance.

From Los Angeles Times

However, Shelton noted that “Hyperion is consistently well below” the 30 ppb level.

From Los Angeles Times