Definition of ACCRETION
- accumulation; the addition of parts to form a whole [n -S]
- The process of growth or increase, typically by the gradual accumulation of additional layers or matter
- The coming together and cohesion of matter under the influence of gravitation to form larger bodies
- A thing formed or added by such growth or increase
- the act or product of accreting [n ACCRETIONS] : ACCRETIVE [adj]