Where does “堆積岩” come from?

堆積岩 (Japanese) comes from Japanese 岩, from Old Japanese いわ.

堆積岩 (Japanese): sedimentary rock

Definitions

  1. sedimentary rock

Ancestry of “堆積岩”, step by step

堆積岩 traces back through two separate lines of ancestry.

via Japanese 岩

StepLanguageWordMeaning
1Japanese岩rock
2Old Japaneseいわ—

via Japanese 堆積

StepLanguageWordMeaning
1Japanese堆積accumulation; to pile up
Every word from Old Japanese いわ →Every word from Japanese 岩 →
堆積岩 — Etymology, Origin & Word History | Etymology Explorer