Definitions

1. noun

The process of formation of rocks, especially the formation of sedimentary and metamorphic rocks from pre-existing rocks, or the origin of rocks.

“The geologists studied the lithogeny of the mountain range to understand its formation.”

2. noun

The formation or origin of stone, especially in the context of the formation of gemstones.

“The jeweler was fascinated by the lithogeny of the diamond he was polishing.”