Meaning

noun supernatural forces and events and beings collectively

noun supernatural practices and techniques

verb cause an eclipse of (a celestial body) by intervention

originEtymology tree Proto-Indo-European *h₁ep-der. Proto-Indo-European *h₁épsder. Proto-Indo-European *h₁óp(i) Proto-Italic *op Latin ob Latin ob- Proto-Indo-European *ḱel- Proto-Indo-European *ḱéletider. Latin *celo Latin occulō Latin occultusbor. English occult Borrowed from Latin occultus (“hidden, secret”).

Etymology from Wiktionary, CC BY-SA 3.0