- made airtight by fusion or sealing.
- not affected by outward influence or power; isolated.
- (sometimes initial capital letter) of, relating to, or characteristic of occult science, especially alchemy.
- (initial capital letter) of or relating to Hermes Trismegistus or the writings ascribed to him.
Origin of hermetic
Examples from the Web for hermetical
Now, however, the sealing of the South was all but hermetical.Abraham Lincoln, Vol. II
John T. Morse
Others were making their entrance upon the great work, after the hermetical method.The Visions of Dom Francisco de Quevedo Villegas
Dom Francisco de Quevedo
His measure of usefulness became full in 1798 when the hermetical seal of death closed his bright career.Sages and Heroes of the American Revolution
L. Carroll Judson
A sect of hermetical philosophers, founded in the fifteenth century, who were engaged in the study of abstruse sciences.The Symbolism of Freemasonry
Albert G. Mackey
- sealed so as to be airtight
- hidden or protected from the outside world
- of or relating to Hermes Trismegistus or the writings and teachings ascribed to him
- of or relating to ancient science, esp alchemy
- esoteric or recondite
Word Origin and History for hermetical
c.1600 (implied in hermetically), "completely sealed," also (1630s) "dealing with occult science or alchemy," from Latin hermeticus, from Greek Hermes, god of science and art, among other things, identified by Neoplatonists, mystics, and alchemists with the Egyptian god Thoth as Hermes Trismegistos "Thrice-Great Hermes," who supposedly invented the process of making a glass tube airtight (a process in alchemy) using a secret seal.
- Completely sealed, especially against the escape or entry of air.