1. A series of three dramas, bearing relation to each other, as parts of one historical picture.

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

• triliogy,
• trilagy,
• triligy,
• atrology,
• triology,
• toplogy,
• trillogy,
• termilogy,
• triolgy,
• tilogy,
• trilogie,
• teology,
• triloggy,
• trilog,
• trylogy,
• trialoge,
• tralog,
• triplopya,
• tricolgy,
• trillopy

• treillage,
• Trulson.

The adjective form of the word "trilogy" is "trilogical".

The plural of the "trilogy" can be the "trilogies".

The singular of the "trilogy" can be the "trilogy".