名詞 concretion:

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
   同義詞：calculus
3. an increase in the density of something
   同義詞：compaction, compression, densification
4. the union of diverse things into one body or form or group; the growing together of parts
   同義詞：coalescence, coalescency, coalition, conglutination

con.cre.tion

n.（名詞）

The act or process of concreting into a mass; coalescence.
凝結(jié)：使凝成一團的過程或動作；凝結(jié)
The state of having been concreted:
凝固：被固化了的狀態(tài)：
例句：
a concretion of seminal ideas in her treatise.
在她的論文中含有許多有待發(fā)展的思想

A solid, hard mass.
凝結(jié)物，固結(jié)物
Geology A rounded mass of mineral matter found in sedimentary rock.
【地質(zhì)學(xué)】 混凝土：發(fā)現(xiàn)于沉積巖中的圓形礦石塊
Pathology A solid mass, usually composed of inorganic material, formed in a cavity or tissue of the body; a calculus.
【病理學(xué)】 （醫(yī)）結(jié)石：通常形成于人體內(nèi)部器官中的由無機物構(gòu)成的塊狀固體；結(jié)石

【引伸】
concre.tionar.y