concretion
英 [kən'kriːʃ(ə)n]
美[kən'kriʃən]
	    - n. 结石;凝固;凝固物
 
英英释意
- 1. the formation of stonelike objects within a body organ (e.g., the kidneys)
 
- 2. a hard lump produced by the concretion of mineral salts; found in hollow organs or ducts of the body;
 - "renal calculi can be very painful"
 
- 3. an increase in the density of something
 
- 4. the union of diverse things into one body or form or group; the growing together of parts