noun, noun or participle which takes 'suru', transitive verb, intransitive verb
General term for things piling up or being piled up, both physically and abstractly. Can be used transitively or intransitively.
机の上に書類が堆積している。
Documents are piling up on the desk.
Snow accumulated and blocked the road.
noun, noun or participle which takes 'suru', intransitive verb
Geological term for the deposition and accumulation of sediment, often used in earth science contexts.
この地層は長い時間をかけて堆積した。
This stratum was deposited over a long period of time.