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Meaning of oidium

o•id•i•um

Pronunciation: (ō-id'ē-um), [key]
— pl. o•id•i•a
  1. one of the conidia that are borne in chains by certain fungi.
  2. (in certain fungi) a thin-walled spore derived from the fragmentation of a hypha into its component cells.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.