1. A plane figure with fifteen angles.

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

• 1uindecagon,
• 2uindecagon,
• wuindecagon,
• auindecagon,
• qyindecagon,
• qhindecagon,
• qjindecagon,
• qiindecagon,
• q8indecagon,
• q7indecagon,
• quundecagon,
• qujndecagon,
• qukndecagon,
• quondecagon,
• qu9ndecagon,
• qu8ndecagon,
• quibdecagon,
• quimdecagon,
• quijdecagon,
• quihdecagon

• quaker,
• quagmire,
• quibble,
• queasy,
• quaff,
• quarter,
• quadrilateral,
• quantity,
• quintuplet,
• queen,
• question,
• quorum,
• quota,
• quaint,
• quintet.

The adjective form of the word "quindecagon" is "quindecagonal".

The plural of the "Quindecagon" can be the "quindecagons".

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