Standard Lemma guide

flashover

noun · 3 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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No pronunciation record was provided for this word.

1

noun

Meaning 1

The near simultaneous ignition of all combustible material in an enclosed area.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

An unintended electric discharge or arc over or around an insulator.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: sparkover

Antonyms: none provided

3

noun

Meaning 3

an unintended electric discharge (as over or around an insulator)

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: discharge, spark, arc, electric arc, electric discharge

History

Etymology

Deverbal from flash over.

Across languages

Translations

9 source translations are retained for this English entry.

  • Chinese Mandarin: 閃燃 /闪燃 (shǎnrán) — ignition
  • Finnish: lieskahdus — ignition
  • German: Flashover — ignition
  • German: Raumdurchzündung — ignition
  • Japanese: フラッシュオーバー (furasshuōbā) — ignition
  • Swedish: övertändning — ignition
  • Finnish: ylilyönti — electric discharge
  • German: Überschlag — electric discharge
  • Swedish: överslag — electric discharge