Here's what rhymes with petrology.
biology geology astrology urology ideology theology pathology apology ecology etiology anthology ontology typology zoology hydrology neurology oncology tautology ethology serology audiology doxology penology virology technology psychology archaeology chronology morphology mythology genealogy aetiology cytology etymology embryology ethnology radiology archeology phrenology gynaecology physiology sociology terminology cosmology epidemiology histology bacteriology immunology meteorology mineralogy cardiology dermatology entomology gerontology ophthalmology numerology anthropology methodology biotechnology pharmacology criminology toxicology climatology gynecology paleontology phenomenology psychopathology microbiology endocrinology nanotechnology Words that almost rhyme with petrology
polity jollity quality priority authority equality frivolity sorority majority minority prodigality inequality prodigy policy colony prophecy lawfully progeny prophesy broccoli probably bodily astronomy solemnly botany solidly larceny plausibly unlawfully wrongfully colloquy homily sodomy androgyny caudally loftily wobbly economy philosophy commonly normally possibly autonomy formally harmony partially biography geography geometry morally anomaly cautiously dichotomy heartily idolatry modesty novelty topography abnormally cordially pharmacy thoughtfully apostasy mortally doggedly dorsally ontogeny phylogeny solvency thoughtlessly topically typography jauntily stolidly tardily democracy monopoly sovereignty bibliography bureaucracy consciously markedly autobiography forcibly photography dishonesty forcefully horribly mahogany modestly monotony pornography uncommonly warranty autocracy demography orthography wantonly apostrophe improbably lithography monogamy mournfully normalcy oligopoly theocracy cacophony deplorably dormancy gorgeously harmlessly morbidly pompously psychopathy sarcophagi remarkably constancy enormously forestry hypocrisy unconsciously informally reportedly carpentry impartially insolvency radiography scornfully anatomically choreography disharmony impossibly mammography peremptorily subconsciously dishonestly incautiously remorselessly constantly aristocracy horizontally paradoxically despondency iconography responsibly hagiography meritocracy monstrously oceanography importantly historiography demonstrably inconstancy preponderantly cinematography