WordReference Random House Unabridged Dictionary of American English © 2025
red′ clay′, [Geol.]
red′-clay′, adj.
- Geologya brown to red, widely distributed deep-sea deposit consisting chiefly of microscopic particles and tinted red by iron oxides and manganese.
- Middle English 1350–1400
'red clay' also found in these entries (note: many are not synonyms or translations):