Etymology
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ontology (n.)

"the metaphysical science or study of being and the essence of things," 1660s (Gideon Harvey), from Modern Latin ontologia (c. 1600); see onto- + -logy. Related: Ontologist.

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ontological (adj.)

"of or pertaining to ontology," 1782, from ontology + -ical. Related: Ontologically

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paleontology (n.)

also palaeontology, "the science of the former life of the Earth, as preserved in fossils," 1833, probably from French paléontologie, from Greek palaios "old, ancient" (see paleo-) + ontologie "science or study of being and the essence of things" (see ontology). Related: Paleontological.

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