1. Plural of arcanum; secrets or mysteries, especially those known only to a few initiated people.
Usage: formal; often used in academic or philosophical contexts

Examples

• The ancient texts contained the arcanums of the mystical order.
• Scholars debated the arcanums hidden within the philosopher's writings.
• The arcanums of nature were gradually revealed through scientific inquiry.
• Only initiates were permitted to learn the arcanums of the tradition.
• The arcanums of alchemy fascinated medieval scholars for centuries.