Standard Lemma guide

pyrophoric

adj · 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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  • /ˌpaɪ.ɹəʊˈfɔː.ɹɪk/
  • US: Recorded audio is listed in the source snapshot.

1

adj

Meaning 1

Spontaneously igniting in air, especially when in a finely divided state.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

adj

Meaning 2

Producing sparks, especially by friction.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

adj

Meaning 3

Able to oxidize with exposure to atmospheric oxygen at normal temperatures.

Definition source: English Wiktionary via Wiktextract

Qualifier: fire investigation

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

From Ancient Greek πυροφόρος (purophóros, “fire-bearing”) + -ic. Analyzable as pyro- + -phore + -ic.

Across languages

Translations

5 source translations are retained for this English entry.

  • Bulgarian: самозапалващ се (samozapalvašt se) — spontaneously igniting in air
  • Catalan: pirofòric — spontaneously igniting in air
  • Czech: samovznětlivý — spontaneously igniting in air
  • French: pyrophorique — spontaneously igniting in air
  • Bulgarian: пускащ искри (puskašt iskri) — producing sparks