plural fungi
ˈfən-ˌjī 
ˈfəŋ-ˌgī
also funguses
ˈfəŋ-gə-səz
ˈfəŋ-ˌgī
also funguses
ˈfəŋ-gə-səz
often attributive
: any of a kingdom (Fungi) of saprophytic and parasitic spore-producing eukaryotic typically filamentous organisms formerly classified as plants that lack chlorophyll and include molds, rusts, mildews, smuts, mushrooms, and yeasts
Examples of fungus in a Sentence
Recent Examples on the Web
Beginning in August, a fungus called Cercospora leaf spot causes leaves to turn red and drop prematurely.
—
Steve Bender, Southern Living, 10 May 2024
Ketoconazole is an antifungal, which works very efficiently to decrease the fungus that builds up in the area between unexfoliated skin cells, Gaunitz says.
—April Benshosan, Verywell Health, 9 May 2024
See all Example Sentences for fungus 
Steve Bender, Southern Living, 10 May 2024
Ketoconazole is an antifungal, which works very efficiently to decrease the fungus that builds up in the area between unexfoliated skin cells, Gaunitz says.
—April Benshosan, Verywell Health, 9 May 2024
See all Example Sentences for fungus
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'fungus.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Dictionary Entries Near fungus
Cite this Entry
“Fungus.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fungus. Accessed 15 May. 2024.
Copy CitationKids Definition
fungus
noun
fun·gus
ˈfəŋ-gəs
1
: any of a kingdom of living things (as molds, rusts, mildews, smuts, and mushrooms) that lack chlorophyll, are parasitic or live on dead or decaying organic matter, and were formerly considered plants
2
: infection with a fungus
fungus
adjective
Medical Definition
fungus
noun
fun·gus
ˈfəŋ-gəs
plural fungi
ˈfən-ˌjī also ˈfəŋ-ˌgī
also funguses
ˈfəŋ-gə-səz
often attributive
1
: any of the kingdom Fungi of saprophytic and parasitic spore-producing eukaryotic typically filamentous organisms formerly classified as plants that lack chlorophyll and include molds, rusts, mildews, smuts, mushrooms, and yeasts
2
: infection with a fungus
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