accretion
/əˈkriːʃən/noun
mass noun
1- the process of growth or increase, typically by the gradual accumulation of additional layers or matter积淀; 增生：
the accretion of sediments in coastal mangroves
海岸红树林里沉积物的增加
figurative〈喻〉the growing accretion of central government authority.
中央政府权力的不断集中。
1.1
- count noun a thing formed or added by such growth or increase积淀物, 积聚物：
the city has a historic core surrounded by recent accretions.
该市有个被新建城区包围起来的充满历史韵味的中心区。
1.2
- Astronomy the coming together and cohesion of matter under the influence of gravitation to form larger bodies【天文】吸积。
派生词
accretive
adjective词源
early 17th cent.: from Latin accretio（n-）, from accrescere 'become larger' （see ACCRETE）.