Is “Oidia” a Scrabble word?
Yes
OIDIA
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Oidia
noun
1.A fragile spore produced by some fungi.
2.The fungus Erysiphe necator (= Uncinula necator), which produces powdery mildew in grapes.