occult

adj. secret, hidden; inconceivable to the human mind, mysterious; magical, supernatural

n. study of the occult or occult practices, study of the supernatural (e.g. mysticism, Kabala, etc.)

The word occult comes from the Latin occultus (clandestine, hidden, secret), referring to "knowledge of the hidden". In the medical sense it is used commonly to refer to a structure or process that is hidden, e.g. an "occult bleed."The word has many uses in the English language, popularly meaning "knowledge of the paranormal", as opposed to "knowledge of the measurable", usually referred to as science. The term is sometimes popularly taken to mean "knowledge meant only for certain people" or "knowledge that must be kept hidden", but for most practicing occultists it is simply the study of a deeper spiritual reality that extends beyond pure reason and the physical sciences. The terms esoteric and arcane can have a very similar meaning, and the three terms are often interchangeable.
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Noun
1. supernatural forces and events and beings collectively; "She doesn't believe in the supernatural"
(synonym) supernatural
(hypernym) causal agent, cause, causal agency
(member-meronym) spiritual being, supernatural being
(part-meronym) Destiny, Fate
2. occult practices and techniques; "he is a student of the occult"
(synonym) occult arts
(hypernym) practice, pattern
Verb
1. cause an eclipse of (a celestial body) by intervention; "The Sun eclipses the moon today"; "Planets and stars often are occulted by other celestial bodies"
(synonym) eclipse
(hypernym) overshadow
2. become concealed or hidden from view or have its light extinguished; "The beam of light occults every so often"
(hypernym) change
3. hide from view; "The lids were occulting her eyes"
(hypernym) conceal, hold back, hold in
Adjective
1. hidden and difficult to see; "an occult fracture"; "occult blood in the stool"
(similar) invisible, unseeable
2. having an import not apparent to the senses nor obvious to the intelligence; beyond ordinary understanding; "mysterious symbols"; "the mystical style of Blake"; "occult lore"; "the secret learning of the ancients"
(synonym) mysterious, mystic, mystical, secret, orphic
(similar) esoteric

adj. occult, secret, hidden; inconceivable to the human mind, mysterious; magical, supernatural

(v. t.)
To eclipse; to hide from sight.
  

(a.)
Hidden from the eye or the understanding; inviable; secret; concealed; unknown.