argillite
noun
argillite is a noun meaning “A fine-grained sedimentary rock, intermediate between shale and slate, sometimes used as a building material” (English Wiktionary, September 2026). It is spelled A-R-G-I-L-L-I-T-E, and it appears about once in every 26 million words in written English (wordfreq, 2021 data). The plural of argillite is argillites.
What does argillite mean?
noun
- 1
A fine-grained sedimentary rock, intermediate between shale and slate, sometimes used as a building material
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Forms of argillite
- argillites plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
How common is argillite?
Argillite appears about once in every 26 million words in written English, the 155,937th most frequent word form in the list.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
Argillite in Spanish, French, German and Portuguese
In the sense a type of rock:
| Language | Words |
|---|---|
| Portuguese | argilita |
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.