pyrogallol
/ˌpaɪroʊˈɡælɔl/
noun
- A chemical compound used in photography, as a developer, and in making dyes and medicines.
- Pyrogallol is sometimes added to hair dyes to produce darker shades.
- The photographer used pyrogallol to develop the black-and-white film.
- In the lab, they handled pyrogallol carefully because it can stain skin.