# 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.
** 1996, V. V. Varadan, J. Chandra, Smart Structures and Materials, →ISBN:The dominant concept in high strain actuators is the flextension mechanism.
** 1996, Bernard M. Kulwicki, Ahmed Amin, Ahmad Safari, 1996 IEEE International Symposium on Application of Ferroelectrics, →ISBN:When the cover plate height decreases, the motion of cover plate is from rotation-dominated to flextension-dominated.
** 2005, V. M. Bogomolʹnyi, Information transducers, →ISBN, page 220:. Using homogeneous flextension piezoceramic plates with uneven thickness polarization, as well as monolithic plates with internal electrodes, llows to increase their dynamic strength.
** 2017, Kenji Uchino, Advanced Piezoelectric Materials: Science and Technology, →ISBN, page 406:Hinge-lever and flextension-type displacement amplification mechanisms are adopted for the multilayer actuators.
* A variable-length extension to a tool or device.
** 1950, Artmide Lighting - Volumes 57-58, page 87:The catalog shows use of units as screw-in and “flextension" types, on single socket or cluster torpedo canopy units, with “add-a-pipe" and curved arms and as portable units.
** 1969, Assembly Engineering - Volume 12, Issues 7-12, page 85:Also included in the set are: a ratchet wrench, adaptor and spinner, nut spinner, plastic grip handle, universal joint, three extensions, a flextension, and a 3/4 in. tip short screwdriver.
** 1992, Official Gazette of the United States Patent and Trademark Office:A low frequency underwater acoustic projector for sonar apparatus, comprising: a flextension body member consisting of a flexible ellipsoidal shell having mutually orthogonal central major and minor axes;
* The extension of a deadline that allows a flexible final date (originally used to refer to Brexit, but subsequently extended to other contexts).
** 2018 November 15, “What's up with Brexit? A guide to emergency summits, flextensions and more.”, in Washington Post:Some E.U. policymakers have argued for a “flextension” that would set a date for Britain’s E.U. exit far in the future but allow Britain to leave as soon as it comes up with a viable plan.
** 2019 April 5, Jim Collins, “3 'Flextensions' Very Evident in This Market: Tesla, Oil and Bonds”, in The Street:The problem with flextensions is that, just as has occurred with Brexit, they don't address the underlying problem.
** 2019 April 6, “The Yorkshire Post says: Brexit flextensions and the uncompromising Jacob Rees-Mogg”, in Yorkshire Post:He has proposed a ‘flextension’ – another new word to add to the Brexit lexicon – in which he proposes a year-long delay with the proviso that the UK can leave the EU as soon as Parliament agrees a deal.
** 2019 April 24, Zsolt Darvas, “Brexit: Losing control. EPC Discussion Paper”, in Archive of European Integration, page 4:On the one hand, it is unwise, by granting ‘flextension’, for the European Council to allow itself to be blamed for trapping the UK inside the Union against the expressed will of the British people to leave it.
* A position in which the lower neck is flexed and upper neck extended.
** 2019, Jonathan Thompson, Iain Moppett, Matthew Wiles, Smith and Aitkenhead's Textbook of Anaesthesia, →ISBN, page 471:The lubricated mask is inserted fully deflated, with the patient's head and neck in the sniffing position (lower neck flexed and upper neck extended, flextension).