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[hahy-fuh] /ˈhaɪ fə/
noun, plural hyphae
[hahy-fee] /ˈhaɪ fi/ (Show IPA)
(in a fungus) one of the threadlike elements of the mycelium.
Origin of hypha
1865-70; < New Latin < Greek hyphḗ web
Related forms
hyphal, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for hyphae


noun (pl) -phae (-fiː)
any of the filaments that constitute the body (mycelium) of a fungus
Derived Forms
hyphal, adjective
Word Origin
C19: from New Latin, from Greek huphē web
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for hyphae



1866, from Modern Latin plural hyphae (1810), from Greek hyphe (singular) "web."

Online Etymology Dictionary, © 2010 Douglas Harper
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hyphae in Medicine

hypha hy·pha (hī'fə)
n. pl. hy·phae (-fē)
A long, slender, usually branched filament of fungal mycelium.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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hyphae in Science
Plural hyphae (hī'fē)
One of the long slender tubes that develop from germinated spores and form the structural parts of the body of a fungus. In many species of fungi, hyphae are divided into sections by cross walls called septa. Each section contains at least one haploid nucleus, and the septa usually have perforations that allow cytoplasm to flow through the hypha. A large mass of hyphae is known as a mycelium, which is the growing form of most fungi. From time to time, hyphae develop reproductive structures that are partitioned from the hypha by holeless septa. In many species, these structures are microscopic; in others, they are visible and large. Mushrooms and shelf fungi are visible reproductive structures of fungi.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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