noun · 2 senses · updated from the 2026-07-25 local source snapshot
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.
Sound
Pronunciation
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
UK:/pɪˈtɹɒl.ə.d͡ʒi/
US:/pəˈtɹɑl.ə.d͡ʒi/
Southern-England:Recorded audio is listed in the source snapshot.
CMU ARPABET:P AH0 T R AA1 L AH0 JH IY0
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
noun
Meaning 1
The study of the origin, composition and structure of rock.
Definition source: English Wiktionary via Wiktextract
Usage: uncountable, usually
Topics: geography, geology, natural-sciences
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
noun
Meaning 2
the branch of geology that studies rocks: their origin and formation and mineral composition and classification
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: lithology
Antonyms: none provided
Broader terms: morphology, geomorphology
History
Etymology
Etymology tree Pre-Greekder.? Ancient Greek πέτρᾱ (pétrā)bor. Latin petrader. English petro- Proto-Indo-European *leǵ- Ancient Greek λόγος (lógos) Proto-Indo-European *-h2 Proto-Indo-European *-éh2 Proto-Indo-European *-i-eh2 Proto-Hellenic *-íā Ancient Greek -ῐ́ᾱ (-ĭ́ā) Ancient Greek -λογῐ́ᾱ (-logĭ́ā)bor. Latin -logialbor. French -logiebor. English -logy English petrology From petro- + -logy.
Across languages
Translations
25 source translations are retained for this English entry.
Albanian:
petrologjí
— the study of rock
Albanian:
petrologjía
— the study of rock
Bashkir:
петрология
(petrologiya)
— the study of rock
Catalan:
petrologia
— the study of rock
Chinese Mandarin:
岩石學 /岩石学
(yánshíxué)
— the study of rock
Danish:
petrologi
— the study of rock
Dutch:
steenkunde
— the study of rock
Finnish:
petrologia
— the study of rock
French:
pétrologie
— the study of rock
Galician:
petroloxía
— the study of rock
German:
Petrologie
— the study of rock
German:
Gesteinskunde
— the study of rock
Italian:
petrologia
— the study of rock
Japanese:
岩石学
(gansekigaku)
— the study of rock
Kazakh:
петрология
(petrologiä)
— the study of rock
Kyrgyz:
петрология
(petrologiya)
— the study of rock
Malayalam:
ശിലാവിജ്ഞാനം
(śilāvijñānaṁ)
— the study of rock