1. hard masses formed by the accumulation of mineral matter in rock or sediment
Usage: geology
2. abnormal hard masses formed in the body, especially in organs or ducts
Usage: medical

Examples

• The geologist found several limestone concretions in the sedimentary rock.
• Iron concretions gave the sandstone its distinctive reddish color.
• The doctor explained that kidney concretions can cause severe pain.
• Calcium concretions had formed in the patient’s gallbladder.
• The beach was littered with round concretions weathered from the cliffs.
• Medical imaging revealed small concretions in the bile duct.