from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Consisting of diatoms or their skeletons.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Of, pertaining to, or containing diatoms or their coverings.

from the GNU version of the Collaborative International Dictionary of English

  • adj. consisting of or containing diatoms or their fossils.

from The Century Dictionary and Cyclopedia

  • In botany, belonging to or resembling Diatomacæ.
  • Containing or made up of diatoms: as, diatomaceous earth. See infusorial earth, under infusorial.


From diatom +‎ -aceous. (Wiktionary)



Log in or sign up to get involved in the conversation. It's quick and easy.

  • Good gracious! This dirt is diatomaceous!

    June 15, 2007