Definition of extensometer in English:



  • An instrument for measuring the deformation of a material under stress.

    • ‘Testing is carried out using a constant cross head speed, and elongation to fracture measured with a 50-mm gage length extensometer.’
    • ‘Column covers are fitted with T-slots to allow compatibility with various accessories, such as grips, fixtures, extensometers, and chambers.’
    • ‘Instrumentation and monitoring within the tunnels will be effected through such means as inclinometers, extensometers, strain gauges, load cells, instrumented rock bolts, and standard convergence and deformation measurements.’
    • ‘With such extensometer, the fiber's central zone is stretched without any displacement and can be analyzed by x-ray diffraction without moving the beam.’
    • ‘Expansin activity was assayed as described earlier using a custom made extensometer.’


Late 19th century: from Latin extens- ‘extended’ (from the verb extendere) + -meter.