diatomite
/daɪˈætəmaɪt/
noun
- A soft, light-colored sedimentary rock made from the fossilized remains of tiny aquatic organisms called diatoms. It is often used in filters, abrasives, and as an absorbent.
- Gardeners sometimes mix diatomite into soil to improve drainage.
- Diatomite is mined in several countries for use in industrial products.
- The water filter contains diatomite to remove fine particles.
Synonyms