Oidium may refer to:
*
''Oidium'' (genus), a genus of fungi in the family Erysiphaceae
*
Oidium (spore), a type of fungal spore
*Oidium, a disease of grapes caused by the fungus species ''
Uncinula necator'' (
syn.
The Botanical and Zoological Codes of nomenclature treat the concept of synonymy differently.
* In botanical nomenclature, a synonym is a scientific name that applies to a taxon that (now) goes by a different scientific name. For example, Linnae ...
''Oidium tuckeri'')
{{Disambiguation