# caput mortuum

> English word · Noun · IPA /ˈkæpət ˈmɔː(ɹ)tjʊəm/

## Definitions
1. Worthless residue of sublimation or distillation.
2. Cardinal purple, a variety of haematite iron oxide pigment.

## Etymology
Unadapted borrowing from Latin caput mortuum (literally “dead head”).

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/caput-mortuum