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Related to oidium: Thamnidium


n. pl. o·id·i·a (-ē-ə)
1. A thin-walled spore produced asexually by fragmentation in certain filamentous fungi.
2. Any of various fungi that cause powdery mildew.

[New Latin Ōidium, fungus genus, from Greek ōion, egg; see oo-.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


n, pl -ia (-ɪə)
(Botany) botany any of various fungal spores produced in the form of a chain by the development of septa in a hypha
[New Latin: from oo- + -idium diminutive suffix]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(oʊˈɪd i əm)

n., pl. o•id•i•a (oʊˈɪd i ə)
(in certain fungi) a thin-walled spore derived from the fragmentation of a hypha into its component cells.
[1855–60; < New Latin < Greek ōi(ón) egg1]
o•id′i•oid`, adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
The objective of this work was to evaluate the efficiency of artificial dyes, used in the industry of juices, at different concentrations or in mixture with glycerol for staining some hyaline, reproductive or vegetative structures, useful for the identification of Oidium sp.
The disease found during the development and growth of the roses was the powdery mildew (Oidium leucoconium).
Influence of drought, salt stress and abscisico acid on the resistance of tomato to Botrytis cinerea and Oidium neolycopersici.
black mildew hopper attack Disease medical name: Oidium mangiferae .The symptoms can be noticed on the inflorescence, stalk of inflorescence, leaves and young fruits.
Various diseases are found in linseed which causes loss in its productivity includes rust caused by Melomsora lini, powdery mildew caused by Oidium lini, Alternaria blight caused by Alternaria lini and wilt caused by Fusarium oxysporum.
Corta de Brasil a Uruguay: "esta cepa (frutilla) que vegeta con asombrosa potencia, es sumamente sana y refractaria al oidium; pues para convencerme de ello, la he tenido en un centro de plantas apestadas, con completa inmunidad [...]".
Saperavi to mildew and oidium weak, in rainy weather berries are affected grey mould.