1. plural of tetralogy: a series of four related literary or dramatic works
Usage: literary
2. plural of tetralogy: a congenital heart defect involving four abnormalities
Usage: medical

Examples

• Wagner’s Ring cycle is one of the most famous tetralogies in opera.
• The author planned to write several tetralogies exploring different historical periods.
• Ancient Greek dramatists often presented their plays as tetralogies during festivals.
• The cardiologist explained that tetralogies of Fallot require surgical intervention.
• Literary scholars debate whether these four novels constitute true tetralogies.
• The hospital specializes in treating children born with various cardiac tetralogies.