fungus gnat

noun

: any of various small dipteran flies (families Mycetophilidae and Sciaridae) resembling mosquitoes and having larvae that feed on fungi and decaying organic matter

Examples of fungus gnat in a Sentence

Recent Examples on the Web
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Watering houseplants with rice water can cause problems with mold, ants, and fungus gnats. Brandee Gruener, Southern Living, 30 June 2026 Use Cinnamon for Plants For outdoor plants, Guerrera sprinkles cinnamon on the soil to naturally kill fungus gnat larvae. Emily Hayes, Martha Stewart, 12 June 2026 Finish off with a layer of small pebbles for a finished look and to keep away fungus gnats. Nan Sterman, San Diego Union-Tribune, 6 June 2026 For fungus gnats hanging around plants, use glue cards that stand upright in the soil. Sheila Kim, The Spruce, 24 May 2026 See All Example Sentences for fungus gnat

Word History

First Known Use

1862, in the meaning defined above

Time Traveler
The first known use of fungus gnat was in 1862

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Cite this Entry

“Fungus gnat.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fungus%20gnat. Accessed 6 Jul. 2026.

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