Definition of argillaceous in English:

argillaceous

Line breaks: ar¦gil|la¦ceous
Pronunciation: /ˌɑːdʒɪˈleɪʃəs
 
/

adjective

Geology
(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.

Origin

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

Definition of argillaceous in:

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Pronunciation: dɪˈmɒrəlʌɪz
verb
cause (someone) to lose confidence or hope