accelerometer
UK[əkˌseləˈrɒmɪtə]US[əkˌseləˈrɑːmɪtər]
n
An instrument for measuring acceleration, especially that of a moving vehicle or aircraft.
Morpheme Breakdown
ac
celer
ometer
ac
celer
ometer
Etymology
The word 'accelerometer' is a modern scientific compound, elegantly constructed from classical roots to precisely name its function. Its core is the Latin root 'celer', meaning "swift", which is prefixed by 'ac-' (a form of 'ad-'), intensifying the sense of moving "toward speed". This combination forms 'accelerate', the concept of increasing velocity. To this, the Greek-derived suffix '-ometer', meaning "measuring instrument", is appended. Thus, the term's literal logic is "an instrument for measuring (the state of moving) toward swiftness," perfectly capturing its purpose of quantifying acceleration.
Analysis
Structure: ac + celer + ometer
- ac (Latin): A prefix meaning "to" or "toward", a variant of 'ad-' before 'c'.
- celer (Latin): A root meaning "swift" or "fast".
- ometer (Greek): A combining form meaning "a measuring device", from 'metron' (measure).
Examples
The aircraft's accelerometer indicated a sudden drop in g-force during the maneuver.
Modern smartphones contain a tiny accelerometer that detects the device's orientation and movement.
Engineers analyzed the data from the crash test dummy's accelerometer to assess impact forces.