flextension

== English == === Etymology === Blend of flex +‎ extension === Noun === flextension (plural flextensions) A type of transducer that uses flexible, elastic shells to transmit and amplify displacements. A variable-length extension to a tool or device. The extension of a deadline that allows a flexible final date (originally used to refer to Brexit, but subsequently extended to other contexts). A position in which the lower neck is flexed and upper neck extended.