argillaceous
adjective
ar·gil·la·ceous ˌär-jə-ˈlā-shəs 
: of, relating to, or containing clay or clay minerals : clayey
Word History
First Known Use
1676, in the meaning defined above
- radiobroadcasting
- radiobroadcasts
- radiocarbon
- radiocarbon dating
- radiocarbon-date
- radiocarbons
- radiocast
- radiocaster
- radiochemical
- radiochemically
- radiochemist
- radiochemistries
- radiochemistry
- radiochemists
- radiochlorines
- radiochromatogram
- radiochromatograms
- radiocommunicatia
- radiocommunications
- radiodetector
- radiodontia
- radiodontic
- radiodontist
- radioecologies
- radioecology