What is acretion?

Answer 1

Accretion is the process by which particles accumulate and grow in size, often observed in various scientific fields such as astronomy, geology, and Biology. In astronomy, it refers to the gradual gathering of matter by celestial bodies, like planets and stars, as they attract dust and gas from their surroundings. In geology, it can describe the buildup of sediment in a particular area. Essentially, accretion involves the gradual addition of material, leading to the growth or development of a structure or entity.