# James's powder

> English word · Noun

## Definitions
1. A powder consisting of one part oxide of antimony and two parts calcium phosphate, once falsely claimed to have medical benefits.

## Etymology
Named after Dr. Robert James, an English physician.

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