ppm
American-
Also PPM, P.P.M., p.p.m. parts per million.
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pulse per minute.
abbreviation
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chem parts per million
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Also: PPM. peak programme meter
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
More than 80% of soil samples tested in 2022 — seven years after that plant closed — were above the 80 ppm threshold for lead, according to a recent report.
From Los Angeles Times
Soil testing revealed a high lead level of 110 ppm.
From Los Angeles Times
Acceptable lead levels vary by state and the federal limit recently decreased from 400 ppm to 200 ppm because of increasing evidence that lead in any amount is harmful to humans.
From Los Angeles Times
High zinc levels aren’t considered toxic to humans until they reach about 23,000 ppm, Wallace said.
From Los Angeles Times
When they tested their soil again in June 2024, they were thrilled to see the lead levels had dropped to 37 ppm, Davis said, making them feel safe enough to add soil and compost to deep raised beds on the property to grow food.
From Los Angeles Times
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
