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
Only then does the fungus finish the job, killing the ant and consuming it from the inside for sustenance as the parasite grows.
—
New Atlas, 12 Apr. 2025
California scientists have determined that dogs might be able to help predict the spread of a dangerous fungus, which has surged in recent years due to the impacts of climate change.
—Sharon Udasin, The Hill, 10 Apr. 2025
Its roots will be shortened and black (mostly dead), killed by the fungus.
—Neil Sperry, Fort Worth Star-Telegram, 4 Apr. 2025
The fungus primarily spreads through medical equipment such as catheters, as well as breathing and feeding tubes.
—Jenny Lehmann, Discover Magazine, 3 Apr. 2025
See All Example Sentences for fungus
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New Atlas, 12 Apr. 2025
California scientists have determined that dogs might be able to help predict the spread of a dangerous fungus, which has surged in recent years due to the impacts of climate change.
—Sharon Udasin, The Hill, 10 Apr. 2025
Its roots will be shortened and black (mostly dead), killed by the fungus.
—Neil Sperry, Fort Worth Star-Telegram, 4 Apr. 2025
The fungus primarily spreads through medical equipment such as catheters, as well as breathing and feeding tubes.
—Jenny Lehmann, Discover Magazine, 3 Apr. 2025
See All Example Sentences for fungus
Cite this Entry
“Fungus.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fungus. Accessed 19 Apr. 2025.
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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