n 1  cap  :  a genus of imperfect fungi of the family Moniliaceae including many which are now considered to be conidial stages of various powdery mildews  2  pl  oid*ia   :  any fungus of the genus Oidium  3  pl  oidia  :  ARTHROCONIDIUM .
 
 
 
Similar sounding terms:  oedema 
 
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