1. A muscle which serves to extend or straighten any part of the body.

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

• extender,
• extensle,
• extensil,
• wxtensor,
• sxtensor,
• dxtensor,
• rxtensor,
• 4xtensor,
• 3xtensor,
• eztensor,
• ectensor,
• edtensor,
• estensor,
• exrensor,
• exstensor,
• extensur,
• Extenuetor,
• Extensture,
• Extenisure,
• Sextenol

• extempore,
• extensively,
• extensile,
• extension,
• extensible,
• extemporize,
• extensional,
• extent,
• extend,
• extemporise,
• extemporary,
• extensive,
• ex tempore,
• extends,
• extended,
• expense,
• extend to.

The adjective form of the word "extensor" is "extensorial".

The plural of the "extensor" can be the "extensors".

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