Definition of petrogeny in English:

petrogeny

noun

Geology
  • Petrogenesis. Frequently in "petrogeny's residua system", a liquid system consisting of the molten oxides of aluminium, sodium, potassium, and silicon which are the chief components of igneous rocks.

Origin

Late 19th century; earliest use found in Jethro Teall (1849–1924), geologist. From petro- + -geny.

Pronunciation

petrogeny

/pɪˈtrɒdʒɪni//pɪˈtrɒdʒ(ə)ni/