Standard Lemma guide
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
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noun
Rock formation, especially the formation of igneous or metamorphic rocks.
Definition source: English Wiktionary via Wiktextract
Usage: uncountable, usually
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
The study of the origin of rocks, especially igneous and metamorphic rocks.
Definition source: English Wiktionary via Wiktextract
Usage: uncountable, usually
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
History
From petro- + -genesis, originally as a calque of earlier German Petrogenese and Petrogenesis.
