Standard Lemma guide

diphosphine

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

The liquid hydride of phosphorus P2H4 which is spontaneously inflammable in air.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable

Topics: chemistry, inorganic-chemistry, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

Any organic compound that has two phosphine groups.

Definition source: English Wiktionary via Wiktextract

Usage: countable

Topics: chemistry, natural-sciences, organic-chemistry, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

From di- + phosphine.

Across languages

Translations

3 source translations are retained for this English entry.

  • Chinese Mandarin: 二膦 (èrlìn) — P2H4
  • Chinese Mandarin: 聯膦 /联膦 (liánlìn) — P2H4
  • Chinese Mandarin: 雙膦烷 /双膦烷 (shuānglìnwán) — P2H4