1. a hard mass formed by the accumulation of matter
2. a rounded mass of mineral matter formed in sedimentary rock
Usage: geology
3. the process of forming into a solid mass

Examples

• The doctor found a small concretion in the patient’s kidney.
• Geologists discovered limestone concretions in the cliff face.
• The concretion of minerals created beautiful rock formations.
• Sand and debris formed a concretion around the old pipe.
• The concretion process took thousands of years to complete.
• Calcium concretions blocked the narrow passage.
• Scientists studied the spherical concretions found in the sediment.