[on-tl-oj-i-kuh l]
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  1. of or relating to ontology, the branch of metaphysics that studies the nature of existence or being as such; metaphysical: Some of the U.S. founders held an ontological belief in natural rights.
Sometimes on·to·log·ic, on·tol·o·gis·tic.
Related formsnon·on·to·log·i·cal, adjectiveun·on·to·log·i·cal, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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Word Origin and History for ontological

1782, from ontology + -ical. Related: Ontologically

Online Etymology Dictionary, © 2010 Douglas Harper