生せい物ぶつ岩がん

noun

biolith

Technical term in mineralogy for a rock formed by organic processes or composed of organic remains.

• 生せい物ぶつ岩がんは、生せい物ぶつの遺い骸がいや活かつ動どうによって形けい成せいされる岩がん石せきの総そう称しょうです。

  Biolith is a general term for rocks formed by the remains or activity of organisms.