: a sudden sharp decline of a population of animals or plants that is not caused directly by human activity
died off; dying off; dies off
: to die sequentially either singly or in numbers so that the total number is greatly diminished
Examples of die-off in a Sentence
Recent Examples on the Web
Stephanie Innes, AZCentral.com, 11 July 2025
What To Know Arizona health officials clarified that the death is unrelated to a recent prairie dog die-off in the Townsend-Winona area, located northeast of Flagstaff.
—Sonam Sheth
gabe Whisnant, MSNBC Newsweek, 11 July 2025
Rafe Pomerance, Sun Sentinel, 6 July 2025
Dry winters could mean ideal conditions for fires The lack of snow in the Treasure Valley has meant that grass isn’t dying off in the winter and remains drier than usual, creating extra fuel for fires, according to Cline.
—Sally Krutzig, Idaho Statesman, 29 June 2025
See All Example Sentences for die-off
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Noun
Those noticing a sudden die-off of rodents or rabbits within Coconino County are urged to contact CCHHS Animal Services at 928-679-8756 or Environmental Health at 928-679-8760.
—Stephanie Innes, AZCentral.com, 11 July 2025
What To Know Arizona health officials clarified that the death is unrelated to a recent prairie dog die-off in the Townsend-Winona area, located northeast of Flagstaff.
—Sonam Sheth
gabe Whisnant, MSNBC Newsweek, 11 July 2025
Verb
In this event, 99% of the world’s coral reefs are likely to die off, according to the Intergovernmental Panel on Climate Change.
—Rafe Pomerance, Sun Sentinel, 6 July 2025
Dry winters could mean ideal conditions for fires The lack of snow in the Treasure Valley has meant that grass isn’t dying off in the winter and remains drier than usual, creating extra fuel for fires, according to Cline.
—Sally Krutzig, Idaho Statesman, 29 June 2025
See All Example Sentences for die-off
Cite this Entry
“Die-off.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/die-off. Accessed 18 Jul. 2025.
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