Meaning of “ppm” in the English Dictionary

american-english dictionary

"ppm" in American English

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chemistry abbreviation for parts per million (= a unit for measuring the amount of a substance that is mixed with a liquid or another substance)

(Definition of “ppm” from the Cambridge Academic Content Dictionary © Cambridge University Press)

"ppm" in Business English

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ppmnoun [ plural ]

uk us MEASURES

abbreviation for parts per million: the amount of a chemical in relation to the substance that contains it:

Lead levels in the water were above 3,500 ppm.

(Definition of “ppm” from the Cambridge Business English Dictionary © Cambridge University Press)

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