# thorotrast

> English word · Noun

## Definitions
1. A radiographic contrast medium composed of a suspension of thorium dioxide.

## Etymology
Blend of thorium + contrast. Originally a trade name.

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