pet·​ro·​gen·​e·​sis ˌpe-trō-ˈje-nə-səs How to pronounce petrogenesis (audio)
: the origin or formation of rocks
petrogenetic adjective

Word History


borrowed from German Petrogenese or Petrogenesis, from petro- petro- + -genese, -genesis genesis

First Known Use

1886, in the meaning defined above

Time Traveler
The first known use of petrogenesis was in 1886

Dictionary Entries Near petrogenesis

Cite this Entry

“Petrogenesis.” Dictionary, Merriam-Webster, Accessed 17 Jun. 2024.

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