Petrologist
"Petrologist" in a Sentence (2 examples)
The petrologist studies the rocks.
As Kirkpatrick worked, Otto Hahn - an intensely patriotic German lawyer and amateur petrologist turned Swedenborgian who believed life originated in outer space - was spending long hours staring down his microscope at what he took to be the fossilised remnants of algae.
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.