cre＝to make（制造），to grow（生长） 变化型 cresc
(a) growth or increase by means of gradual additions （逐渐地）生长, 增大.
(b) the growing of separate things into one 连生; 合生.
(a) added matter that causes such growth 增添物.
(b) thing formed by the addition of such matter 积累而成的东西
*a chimney blocked by an accretion of soot 被聚积的煤烟子所堵塞的烟囱.
n [U and C]formal
[Date: 1600-1700; Language: Latin;Origin: accretio, from accrescere, from ad- 'to' + crescere 'to grow']
a layer of a substance which slowly forms on something
a gradual process by which new things are added and something gradually changes or gets bigger
1. A chimney blocked by an accretion of soot 被聚积的煤烟子所堵塞的烟囱.