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fall armyworm
noun
: a migratory American noctuid moth (Spodoptera frugiperda) that is destructive to grains and grasses as a larva
Examples of fall armyworm in a Sentence
Recent Examples on the Web
Knowing what fall armyworms look like and how to treat them is your best defense against these destructive pests.
—Arricca Elin Sansone, Southern Living, 13 Aug. 2024
What exactly is a fall armyworm?
—Christine Fernando, USA TODAY, 1 Sep. 2021
Since 2015, fall armyworm moths have ravaged maize crops, by one estimate destroying a third of Kenya’s annual production.
—Matt Reynolds, WIRED, 3 Mar. 2023
The baculovirus, with its genetic instructions, is then introduced into cells taken from the fall armyworm moth.
—Carolyn Y. Johnson, Anchorage Daily News, 6 June 2022
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Word History
First Known Use
1881, in the meaning defined above
Dictionary Entries Near fall armyworm
Cite this Entry
“Fall armyworm.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fall%20armyworm. Accessed 1 Dec. 2024.
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