ac·cre·tion 
/əˈkri:ʃən/ noun
plural ac·cre·tions /əˈkri:ʃən/ noun 1 [noncount] : a gradual process in which layers of a material are formed as small amounts are added over time
▪ rocks formed by the slow accretion of limestone — often used figuratively ▪ The gradual accretion of detail creates a complex and moving story. 2 [count] : something that has grown or accumulated slowly : a product or result of gradual growth
▪ strangely shaped limestone accretions ▪ There was an accretion of ice on the car's windshield.
▪ rocks formed by the slow accretion of limestone — often used figuratively ▪ The gradual accretion of detail creates a complex and moving story.
▪ strangely shaped limestone accretions ▪ There was an accretion of ice on the car's windshield.
