Standard Lemma guide

montmorillonite

noun · 1 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

noun

Meaning 1

Any of a group of soft, clay-like silicate minerals having many industrial and technical uses.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Topics: chemistry, geography, geology, mineralogy, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

From Montmorillon + -ite, after where it was identified.

Across languages

Translations

10 source translations are retained for this English entry.

  • Chinese Mandarin: 蒙脱石 (méngtuōshí) — a type of smectite clay
  • Chinese Mandarin: 微晶高岭土 — a type of smectite clay
  • Chinese Mandarin: 青膏泥 — a type of smectite clay
  • Chinese Mandarin: 白膏泥 — a type of smectite clay
  • Finnish: montmorilloniitti — a type of smectite clay
  • French: montmorillonite — a type of smectite clay
  • German: Montmorillonit — a type of smectite clay
  • Italian: montmorillonite — a type of smectite clay
  • Portuguese: montmorilonite — a type of smectite clay
  • Spanish: montmorillonita — a type of smectite clay