diatomaceous earth

Từ điển WordNet v3.1 - WordNet Dictionary

noun

a light soil consisting of siliceous diatom remains and often used as a filtering material
• Syn:
diatomite, kieselguhr
• Hypernyms:
earth, ground, filter

• Từ đồng nghĩa / Synonyms:
  diatomite, kieselguhr