forever chemical

noun

plural forever chemicals
: a toxic substance and especially a synthetic chemical (as of the per- and polyfluoroalkyl substances group) that persists and accumulates in the environment
not used technically
Canadian researchers have discovered high levels of a "forever chemical", used in making toilet paper, in the bodies of endangered killer whales, sparking fears the toxic substance could further harm them.Leyland Ceccoin
Landfills, military bases and firefighting training centers also are thought to be sources of forever chemical pollution.Sammy Fretwell
often used in plural
PFAS, or per- and polyfluoroalkyl substances, are colloquially known as "forever chemicals" because they are so difficult to break down.Layne Cameron
Forever chemicals are used as surface treatments to block water and stains. In fact, a 2022 report by Toxic-Free Future, an environmental health research and advocacy organization, found that nearly three-quarters of products labeled as water- or stain-resistant tested positive for them.Hannah Norman
PFAS, a group of manufactured chemicals commonly used since the 1940s, are called "forever chemicals" for a reason. Bacteria can't eat them; fire can't incinerate them; and water can't dilute them.Amanda Morris
Van Zile said many people love a Wisconsin Friday fish fry, but many fish are found with high levels of forever chemicals, such as mercury, and that we're slowly poisoning ourselves.Frank Vaisvilas

Examples of forever chemical in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
So-called ‘forever chemical’ refers to a collection of more than 9,000 Per- and polyfluoroalkyl substances called PFAS. Mack Degeurin, Popular Science, 23 Jan. 2025 Zeldin had supported a bill to reduce harmful forever chemicals, called PFAS, that would have required the EPA to set limits on substances in drinking water. Michael Phillis, Los Angeles Times, 16 Jan. 2025 The samples were then sent to an independent laboratory, which ran nearly 36,000 tests on 258 contaminants, including a slew of heavy metals, phthalates, perfluoroalkyl and polyfluoroalkyl substances (also known as PFAS or forever chemicals), and bisphenols BPA and BPS. Korin Miller, Health, 14 Jan. 2025 Attorney General Ken Paxton recently sued 3M and DuPont alleging that the companies did not provide truthful information about forever chemicals. Elizabeth Campbell, Fort Worth Star-Telegram, 9 Jan. 2025 See all Example Sentences for forever chemical 

Word History

First Known Use

2010, in the meaning defined above

Time Traveler
The first known use of forever chemical was in 2010

Dictionary Entries Near forever chemical

Cite this Entry

“Forever chemical.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/forever%20chemical. Accessed 26 Jan. 2025.

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!