pisolith
/ˈpaɪsəlɪθ/
noun
- A small, rounded, pea-shaped stone or mineral concretion, often found in soil or sedimentary rock.
- Pisoliths can form in layers, like tiny stone peas.
- Under the microscope, the pisolith showed concentric rings.
- The geologist collected a pisolith from the cave floor.
Synonyms