psephite

n. [地]碎砾岩,砾质岩,砾状岩

词形变化

psephites 复数 psephites

释义与例句

n.
  1. 1.

    A sediment or sedimentary rock composed of fragments that are coarser than sand and which are enclosed in a matrix that varies in kind and amount.

    可数 不可数

词源

From Ancient Greek ψῆφος (psêphos, “pebble”) + -ite.

来源：wiktionary