Standard Lemma guide

vermiculite

noun · 2 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

A hydrated silicate mineral which expands on heating; it is used in insulation and as a medium for planting.

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

2

noun

Meaning 2

any of a group of yellow or brown hydrous silicate minerals having a micaceous structure

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: mineral

History

Etymology

From Latin vermiculus (“wormlet”), for its fibrous nature and tendency to expand into worm-like shapes when heated.

Across languages

Translations

8 source translations are retained for this English entry.

  • Chinese Mandarin: 蛭石 (zhìshí) — mineral
  • Finnish: vermikuliitti — mineral
  • French: vermiculite — mineral
  • German: Vermiculit — mineral
  • Greek: βερμικουλίτης (vermikoulítis) — mineral
  • Italian: vermiculite — mineral
  • Japanese: 蛭石 (hiruishi) — mineral
  • Spanish: vermiculita — mineral