noun, plural oidia [oh-id-ee-uh] . Mycology.
one of the conidia that are borne in chains by certain fungi.
(in certain fungi) a thin-walled spore derived from the fragmentation of a hypha into its component cells.

1855–60; < Neo-Latin < Greek ōi(ón) egg (cognate with Latin ovum; see oo-) + -idium -idium

oidioid, adjective
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World English Dictionary
oidium (əʊˈɪdɪəm)
n , pl -ia
botany any of various fungal spores produced in the form of a chain by the development of septa in a hypha
[New Latin: from oo- + -idium diminutive suffix]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Encyclopedia Britannica


in fungi (kingdom Fungi), a single-celled asexual spore (arthrospore) produced by fragmentation of fungal filaments (hyphae) in lower fungi; the asexual stage of Erysiphaceae (powdery mildew fungi); or, in Basidiomycota, both an asexual spore (microconidium) and a male cell (spermatium).

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences for oidium
The species has also been known in the past as monilia albicans and oidium albicans.
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