(Latin: fast, speed, swift, rapid)

Compare this element with brady- for words with opposite meanings.

deceleration (s) (noun), decelerations (pl)
The diminishment of a speed for a slower movement.
decelerator (s) (noun), decelerators (pl) (nouns)
An apparatus that slows the speed of an engine.
decelerometer (s) (noun), decelerometers (pl)
An instrument for determining how slow a moving body is going.
piezotransistor accelerometer (s), piezotransistor accelerometers (pl) (nouns)
An instrument or device which is used to measure acceleration, by recording the current variation across the pn junction of a transistor that has received a concentrated force from a seismic mass.