1. A composition in three parts.

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

• rerzetto,
• ferzetto,
• gerzetto,
• yerzetto,
• 6erzetto,
• 5erzetto,
• twrzetto,
• tsrzetto,
• tdrzetto,
• trrzetto,
• t4rzetto,
• terrzetto,
• tertzetto,
• tezetto,
• Terzetoo,
• Terzotto,
• Tertetto,
• Tarezetto,
• Terzette,
• Tertzaetto

• terrestrial,
• tercet.

The adjective form of the word "terzetto" is "terzettic" or "terzetticale".