(the occult) matters regarded as involving the action or influence of supernatural agencies or some secret knowledge of themoccultism nounoccultist noun
involving supernatural powersknown only to the initiated few; esotericnot easily understood; abstrusein medicine, not present, manifest, or detectable by the unaided eye occult blood loss occultly adv[Latin occultus, past part. of occulere to cover up, from oc- + celare to hide]
to hide (something) from view, esp by putting something else in front of itto conceal or become concealed (a celestial body) by occultation verb intransto become concealed by occultation [Latin occultare, from occultus: see occult2]