1. A philosophical and spiritual 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 or state of being hermetic; complete sealing or closure that prevents the passage of air or other substances.
Usage: technical usage; less common than the philosophical sense

Examples

• Hermetism influenced Renaissance scholars who sought hidden wisdom in ancient texts.
• The study of hermetism combines elements of alchemy, astrology, and mysticism.
• Medieval alchemists were deeply interested in hermetism and its esoteric teachings.
• The hermetism of the sealed container kept the contents fresh for months.
• Hermetism teaches that the microcosm reflects the macrocosm.
• Modern occultists continue to explore the principles of hermetism.