accretion
/əˈkriːʃən/
noun
plural
accretions
plural
accretions
Britannica Dictionary definition of ACCRETION
1
[noncount]
:
a gradual process in which layers of a material are formed as small amounts are added over time
—
often used figuratively
2
[count]
:
something that has grown or accumulated slowly
:
a product or result of gradual growth