Greek, late 16th century
1. A tool or instrument used to gain knowledge
2. A set of guiding principles for a particular science, philosophy, or discipline
An organon is something (such as a textbook) used to help someone acquire knowledge. The “Organon” is a collection of six books by Greek philosopher Aristotle dealing with logic, all combining to create a definitive lecture still referenced today.
Example: During the Senate confirmation hearings, I kept reaching for my spiritual organon; hoping I could make sense of the relentless balderdash.