The alchemists, as the people were called who tried
to make gold, considered themselves followers of
Hermes, and often called themselves Hermetic
philosophers. --A. B.
Buckley.
2. Of or pertaining to the system which explains the causes
of diseases and the operations of medicine on the
principles of the hermetic philosophy, and which made much
use, as a remedy, of an alkali and an acid; as, hermetic
medicine.
3. Made perfectly close or air-tight by fusion, so that no
gas or spirit can enter or escape; as, an hermetic seal.
See Note under {Hermetically}.
{Hermetic books}.
(a) Books of the Egyptians, which treat of astrology.
(b) Books which treat of universal principles, of the
nature and orders of celestial beings, of medicine,
and other topics.