# philosopher's wool

> English word · Noun · IPA /fɪˌlɒsəfəz ˈwʊl/

## Definitions
1. Zinc oxide (chemical formula ZnO) as a white flocculent powder.

## Etymology
From philosopher (“(obsolete) an alchemist”) + -’s + wool.

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