First Known Use: 1857
Dictionary
oidium
noun oid·i·um \ō-ˈi-dē-əm\
plural -ia \-dē-ə\
Definition of OIDIUM
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 (as an oidium) —called also arthrospore
2
: a powdery mildew especially of grapes caused by an oidium
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Origin of OIDIUM
New Latin, from o- + -idium
Medical Dictionary
oidium
noun oid·ium \ō-ˈid-ē-əm\
Medical Definition of OIDIUM
1
capitalized : a genus of imperfect fungi of the family Moniliaceae including many which are now considered to be conidial stages of various powdery mildews
2
plural oid·ia \-ē-ə\ : any fungus of the genus Oidium
3
plural oidia : arthroconidium
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