Definition of diatomaceous : consisting of or abounding in diatoms or their siliceous remains diatomaceous silica.

What does the word diatomaceous mean?

Definition of diatomaceous : consisting of or abounding in diatoms or their siliceous remains diatomaceous silica.

Is diatomaceous earth toxic to humans?

Food-grade diatomaceous earth is low in crystalline silica and considered safe for humans. The filter-grade type is high in crystalline silica and toxic to humans.