1. The first three of the terrestrial sciences of the Middle Ages, grammar, logic, and rhetoric. See Science.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• trillum,
• tridiuum,
• trivil,
• frivool,
• pterigium,
• triosium,
• trivian,
• triviam,
• vivium,
• biviuum,
• bivvium,
• tricius,
• tritovuum,
• Trivint,
• rrivium,
• trivum,
• trivvium,
• triviumm,
• Travium,
• Triviem

The adjective form of the word "Trivium" is "Trivial".