mealybug

noun

mealy·​bug ˈmē-lē-ˌbəg How to pronounce mealybug (audio)
: any of a family (Pseudococcidae) of scale insects that have a white cottony or waxy covering and are destructive pests especially of fruit trees

Examples of mealybug in a Sentence

Recent Examples on the Web
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Common pests include mealybugs, spider mites, and aphids. Kim Toscano, Southern Living, 14 Dec. 2025 As of now, there are no insecticides labeled for the control of the pest in the U.S. Anyone who believes they are affected and notices symptoms or insect clusters resembling mealybugs is being asked to contact the Texas Department of Agriculture at 1-800-TELL-TDA. Christina Shaw, FOXNews.com, 12 Dec. 2025 Miller suggests being on the lookout for mealybugs on grass leaves, stems, soil and under cow droppings, with a focus on unmanaged areas like fence lines or ungrazed patches. Julia Falcon, CBS News, 11 Dec. 2025 However, mealybugs or gnats could also cause a problem. Lynn Coulter, Better Homes & Gardens, 7 Dec. 2025 See All Example Sentences for mealybug

Word History

First Known Use

1824, in the meaning defined above

Time Traveler
The first known use of mealybug was in 1824

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Cite this Entry

“Mealybug.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mealybug. Accessed 14 Jan. 2026.

Kids Definition

mealybug

noun
mealy·​bug ˈmē-lē-ˌbəg How to pronounce mealybug (audio)
: any of numerous scale insects that have a white cottony or waxy covering and are destructive pests especially of fruit trees

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