English
slidometer
From slide + -o- + -meter.
A compound of slide + -o- + -meter
Proto-Indo-European *h₃sleydʰ- ‘to slip, slide’
…
Proto-Germanic *slīdaną ‘to slide, to slip’
Proto-West Germanic *slīdan ‘to slide, to slip’
Old English slīdan ‘to slide’
Middle English sliden ‘to slide then fall’
English slide
Today it means
noun An instrument for indicating and recording shocks to railway cars caused by sudden stopping.
Language periods are conventional ranges, not dates for this word.
Etymograph / slidometer