1. a philosophical and religious tradition based on the teachings attributed to Hermes Trismegistus, emphasizing mystical knowledge, alchemy, and the unity of all things
Usage: often capitalized; historical and religious context
2. the quality of being hermetic; complete sealing or isolation from outside influence
Usage: less common usage; often used metaphorically

Examples

• Hermeticism influenced Renaissance scholars who sought hidden wisdom in ancient texts.
• The study of hermeticism combines elements of alchemy, astrology, and philosophy.
• Medieval alchemists drew heavily on hermeticism in their pursuit of transmutation.
• The hermeticism of the secret society kept its practices hidden from outsiders.
• Modern occultism has revived interest in hermeticism and its esoteric teachings.