OCCULT

occult. Occult, a. secret, hidden, unknown, mysterious

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Oc‐cult″ (?), a. [[L. occultus, p. p. of occulere to cover up, hide; ob (see Ob-) + a root prob. akin to E. hell: cf. F. occulte.]] Hidden from the eye or the understanding; invisible; secret; concealed; unknown. It is of an occult kind, and is so insensible in its advances as to escape observation. I. Taylor. Occult line (Geom.), a line drawn as a part of the construction of a figure or problem, but not to appear in the finished plan. — Occult qualities, those qualities whose effects only were observed, but the nature and relations of whose productive agencies were undetermined; — so called by the schoolmen. — Occult sciences, those sciences of the Middle Ages which related to the supposed action or influence of occult qualities, or supernatural powers, as alchemy, magic, necromancy, and astrology.