oidium(redirected from oidia)
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n. pl. o·id·i·a (-ē-ə)
1. A thin-walled spore produced asexually by fragmentation in certain filamentous fungi.
2. Any of various fungi that cause powdery mildew.
[New Latin Ōidium, fungus genus, from Greek ōion, egg; see oo-.]
n, pl -ia (-ɪə)
(Botany) 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]
o•id•i•um(oʊˈɪd i əm)
n., pl. o•id•i•a (oʊˈɪd i ə)
(in certain fungi) a thin-walled spore derived from the fragmentation of a hypha into its component cells.
[1855–60; < New Latin < Greek ōi(ón) egg1]