ontological

/ˌɑntəˈlɑdʒɪkəl/
adjective
  1. Relating to the branch of philosophy that studies the nature of existence, being, or reality.
    • The philosopher's ontological argument tries to prove that God exists by definition.
    • In science fiction, ontological questions about what it means to be human are common.
    • The debate had an ontological focus, asking whether numbers exist independently of the mind.
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