Definitions

1. noun

A person or thing that lengthens something, especially a substance or a material.

“The lengthener was added to the mixture to increase its durability.”

2. verb

To increase the length of something, especially a substance or a material.

“The fibers were lengthened to make them more flexible.”

3. noun

A device or tool used to lengthen something, especially in the context of manufacturing or construction.

“The lengthener was used to extend the metal rods to the required length.”