Definition: The word "accretion" in English has two related meanings: 1. The act or process of accumulating or adding to something, especially by the accumulation of material in a stream or body. 2. In physics, it refers to the tendency for matter to combine into larger and larger particles through a phenomenon called nuclear fission. The definition of "accretion" can vary depending on the context. For instance: - A word that refers to the process of adding material to the surface of an object, especially in a stream or body. It can refer to physical phenomena such as the accumulation of rocks and sediment into larger bodies like lakes or oceans. Examples include sand accumulations, soil accumulation, and magma accumulation. - The act or property of combining or accumulating matter with other materials, often through nuclear reactions or chemical processes. This is particularly relevant in nuclear physics where matter combines together to form new particles. In summary, "accretion" refers to the process of adding material to an object's surface, which can involve both physical and chemical processes. The term encompasses a broad range of phenomena related to matter accumulation and transformation.
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