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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Their main food sources are energy-rich liquids, such as the honeydew produced by insects like scale bugs and mealybugs and nectar secreted from specialized glands on plants. Scott Travers, Forbes.com, 5 Apr. 2025 The treatment will vary depending on the invader, such as applying insecticidal soap to remove aphids or dabbing mealybugs with rubbing alcohol. The Washington Post, San Diego Union-Tribune, 22 Mar. 2025 Warm, humid conditions also breed mealybugs, which can spread an infection that spoils cacao crops. Maya Huter, NBC News, 13 Feb. 2025 Scale, aphids, mealybugs, and spider mite outbreaks occur on occasion. Kim Toscano, Southern Living, 12 Feb. 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 10 Apr. 2025.

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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