: 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
Alexandra A Phillips, The Conversation, 13 Oct. 2025
Luckily, this practice can still be done in the window that succeeds late fall die-off and precedes a heavy freeze.
—Anthony Reardon, Kansas City Star, 20 Sep. 2025
Devoun Cetoute, Miami Herald, 12 Oct. 2025
There is no treatment for EHD, but spread of the disease usually slows when the fall ushers in colder weather and the insect population starts to die off.
—Sophie Hartley, IndyStar, 9 Oct. 2025
See All Example Sentences for die-off
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Noun
That pressure may trigger a tipping point with mass tree die-offs.
—Alexandra A Phillips, The Conversation, 13 Oct. 2025
Luckily, this practice can still be done in the window that succeeds late fall die-off and precedes a heavy freeze.
—Anthony Reardon, Kansas City Star, 20 Sep. 2025
Verb
Former Tropical Storm Jerry died off Saturday afternoon.
—Devoun Cetoute, Miami Herald, 12 Oct. 2025
There is no treatment for EHD, but spread of the disease usually slows when the fall ushers in colder weather and the insect population starts to die off.
—Sophie Hartley, IndyStar, 9 Oct. 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 16 Oct. 2025.
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