请输入您要查询的英文单词：
单词
accretion
释义
accretion
NOUN
C
/əˈkriːʃn/
1
formal
a gradual increase in the size or amount of something through the addition of new parts （通过添加而逐渐的）增大，增多
2
technical
a layer of a substance that gradually forms on a rock or area of land , making it bigger 冲积层