Definition of argillaceous in English:


Syllabification: ar·gil·la·ceous
Pronunciation: /ˌärjəˈlāSHəs


  • (Of rocks or sediment) consisting of or containing clay.
    More example sentences
    • It is predominantly found in the marl areas but also, more rarely, in fine-grained argillaceous limestones.
    • The 284 m section is composed of calcareous shales, argillaceous limestone, and limestone.
    • They were found as scattered individuals in the argillaceous limestones.


late 17th century: from Latin argillaceus (from argilla 'clay') + -ous.

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