Standard Lemma guide

oidium

noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

noun

Meaning 1

A fragile spore produced by some fungi.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

The fungus Erysiphe necator (= Uncinula necator), which produces powdery mildew in grapes.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

From New Latin ōidium, equivalent to Ancient Greek ᾠόν (ōión, “egg”) + -idium.

Across languages

Translations

7 source translations are retained for this English entry.

  • Ukrainian: ої́дія (ojídija) — fragile spore
  • Catalan: oïdi — cognate translations of oidium — otherwise see powdery mildew
  • French: oïdium — cognate translations of oidium — otherwise see powdery mildew
  • Italian: oidio (1,2) — cognate translations of oidium — otherwise see powdery mildew
  • Spanish: oídio — cognate translations of oidium — otherwise see powdery mildew
  • Turkish: külleme — cognate translations of oidium — otherwise see powdery mildew
  • Ukrainian: ої́діум (ojídium) — cognate translations of oidium — otherwise see powdery mildew