argillaceous
/,ɑ:dʤi'leiʃəs/
Definition
- Adjective:
- Resembling or containing clay: Describes materials, especially rocks or soils, that have properties similar to clay or have clay as a constituent part.
Usage
The adjective argillaceous is used primarily in scientific contexts, such as geology, soil science, and ceramics. It describes the composition or texture of a material. It is a formal, technical term.
Examples
- Adjective:
- The sedimentary layers were primarily argillaceous, indicating deposition in calm, ancient waters.
- An argillaceous shale is often impermeable to water.
- The potter sought a highly argillaceous soil for making traditional earthenware.
Advanced Usage
- "Argillaceous matrix": In geology, this refers to the fine-grained, clay-rich material that surrounds larger particles in a sedimentary rock.
- The sandstone contained pebbles embedded in an argillaceous matrix.
Variants and Related Words
- Argillic (adj): Pertaining to or containing clay minerals, often used in soil science (e.g., ).
- Argillite (n): A compact, fine-grained sedimentary rock composed mainly of clay minerals.
Synonyms
- Clayey: Having the nature of or containing clay. (This is the most common synonym in both technical and general use.)
- Pelitic: A more specialized geological term for rocks derived from clay or mud.
Antonyms
- Arenaceous: Resembling or containing sand; sandy.
- Calcareous: Containing calcium carbonate; chalky.
Adjective
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resembling or containing clay
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argillaceous rocks
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