oidium
noun
oid·i·um
ō-ˈi-dē-əm
plural oidia
ō-ˈi-dē-ə
1
a
: any of a genus (Oidium of the family Moniliaceae) of imperfect fungi many of which are now considered to be conidial stages of various powdery mildews
b
: one of the small conidia borne in chains by various fungi (such as an oidium)
called also arthrospore
2
: a powdery mildew especially of grapes caused by an oidium
Cite this Entry
“Oidium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/oidium. Accessed 11 Mar. 2025.
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