Definition of biolith in English:

biolith

noun

Geology
  • Originally: a rock of organic origin; specifically one composed of the remains of living organisms or produced by the activity of such organisms. In later use also: a mineralized particle of animal or plant origin, found in soil, rock, etc.

Origin

Mid 19th century. From bio- + -lith, after German Biolith.

Pronunciation

biolith

/ˈbʌɪəlɪθ/