transcription, транскрипция: [ ō-ˈi-dē-əm ]
noun
( plural oid·ia -dē-ə)
Etymology: New Latin, from o- + -idium
Date: 1857
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