[ fuhn-jahy, fuhng-gahy ]
/ ˈfʌn dʒaɪ, ˈfʌŋ gaɪ /
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plural noun
a plural of fungus.
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Other definitions for fungi (2 of 3)

[ fuhn-jahy, fuhng-gahy ]
/ ˈfʌn dʒaɪ, ˈfʌŋ gaɪ /

noun (used with a plural verb)Biology.
a taxonomic kingdom, or in some classification schemes a division of the kingdom Plantae, comprising all the fungus groups and sometimes also the slime molds.
Also called Mycota.

Origin of Fungi

From New Latin; see origin at fungus

Other definitions for fungi (3 of 3)


a combining form representing fungus in compound words: fungicide.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022


What does fungi- mean?

The combining form fungi– is used like a prefix meaning “fungus.” It is occasionally used in scientific terms, especially in biology.

The form fungi– comes from Latin fungus, meaning “fungus.” It is possible that fungus is related to Greek spóngos, meaning “sponge,” by way of a long-lost substrate language of the Mediterranean.

What are variants of fungi-?

When combined with words or word elements that begin with a vowel, fungi– becomes fung-, as in fungemia.

Examples of fungi-

One example of a technical term that uses the form fungi– is fungicide, “a substance or preparation, as a spray or dust, used for destroying fungi.”

While fungi- means “fungus,” cide refers to “killer,” from Latin -cīda. Fungicide literally translates to “fungus killer.”

What are some words that use the combining form fungi-?

What are some other forms that fungi– may be commonly confused with?

Not every word that begins with the exact letters fungi– or fung-, such as fungo or fungible, is necessarily using the combining form fungi– to denote “fungus.” Learn why fungible means “exchangeable” at our entry for the word.

Break it down!

The combining form vorous means “eating” or “gaining sustenance from.” With this in mind, what does fungivorous mean?

How to use fungi in a sentence

British Dictionary definitions for fungi (1 of 2)

/ (ˈfʌŋɡaɪ, ˈfʌndʒaɪ, ˈfʌndʒɪ) /

a plural of fungus

British Dictionary definitions for fungi (2 of 2)


before a vowel fung-

combining form
fungusfungicide; fungoid
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for fungi (1 of 2)

[ fŭnjī, fŭnggī ]

Plural offungus

Medical definitions for fungi (2 of 2)


The kingdom of organisms that is made up of the fungi and includes the yeasts, molds, mildews, and mushrooms.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Cultural definitions for fungi

[ (fun-jeye, fung-geye) ]

sing. fungus

Plantlike organisms lacking chlorophyll, such as mushrooms, molds, yeasts, and mildews. Modern biologists tend to place fungi in their own kingdom, not in the plant kingdom, because they get their nutrients from other living things (or from the remains of living things that have died) rather than from photosynthesis. (See under “Medicine and Health.”)

The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.