a hard solid mass formed by the local accumulation of matter, especially within the body or within a mass of sediment
固结物,凝结物。
[mass noun]the formation of such a mass
固结,凝结。
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concretionn.固结物;凝结物;固结;凝结
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conceptionn.怀孕;怀胎;受精;观点;想法;看法;认识;观念;构想;理解
"mid 16th cent.: from Latin