# phosphine

> English word · Noun · IPA /ˈfɒsfiːn/ · frequency rank #93,005

## Definitions
1. A toxic gas, chemical formula PH₃.
2. Any alkyl or aryl derivative of this compound, PR₃ (where at least one R is not H),
3. Chrysaniline, often in the form of a salt.

## Etymology
From phosph- + -ine.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-09-03.
Canonical page: https://plainspell.com/en/word/phosphine