Hermetic

Hermetical (her-nuf -ik, her-met' '-ik-al) e god Mercury, the reputed founder of almy. Pertaining to chemistry. Also, having resistance to chemic action. Also, protected from exposure to air. H. Medicine, alchemistic or spagyric practice. H. Sealing, the closure of an outlet by cementation or fusion, so that it is impervious to air. Also, the closing or covering of a wound by impervious dre ings.