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[haw-stawr-ee-uh m, -stohr-] /hɔˈstɔr i əm, -ˈstoʊr-/
noun, plural haustoria
[haw-stawr-ee-uh, -stohr-] /hɔˈstɔr i ə, -ˈstoʊr-/ (Show IPA)
a projection from the hypha of a fungus into the organic matter from which it absorbs nutrients.
the penetrating feeding organ of certain parasites.
Origin of haustorium
1870-75; < New Latin, equivalent to Latin haus- (variant stem of haurīre to draw, scoop up) + -tōrium -tory2
Related forms
haustorial, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for haustorium


noun (pl) -ria (-rɪə)
the organ of a parasitic plant that penetrates the host tissues and absorbs food and water from them
Derived Forms
haustorial, adjective
Word Origin
C19: from New Latin, from Late Latin haustor a water-drawer; see haustellum
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
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haustorium in Science
Plural haustoria
A specialized absorbing structure of a parasitic plant, such as the rootlike outgrowth of the dodder, that obtains food from a host plant. In parasitic fungi, haustoria are specialized hyphae that penetrate the cells of other organisms and absorb nutrients directly from them.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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