ex·ten·som·e·ter 
(ĕk′stĕn-sŏmĭ-tər)
(ĕk′stĕn-sŏmĭ-tər)n.
An instrument used to measure minute deformations in a test specimen of a material.
[EXTENS(ION) + -METER.]
- psychoneurosis
- psychoneurotic
- psychopath
- psychopathic
- psychopathically
- psychopathologic
- psychopathological
- psychopathologist
- psychopathology
- psychopathy
- psychopharmacologic
- psychopharmacological
- psychopharmacologist
- psychopharmacology
- psychophysical
- psychophysically
- psychophysicist
- psychophysics
- psychophysiologic
- psychophysiological
- psychophysiologist
- psychophysiology
- psychopomp
- psychosexual
- psychosexuality