Definition of hermetism
1a
: a system of ideas based on hermetic teachings
b
: adherence to or practice of hermetic doctrine
2
: the practice of being hermetically mysterious
it is not … willful hermetism, if the message of their art is veiled and indirect— R. J. Goldwater
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Merriam-Webster unabridged
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Time Traveler for hermetism
The first known use of hermetism was in 1897
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