(countable) The amount by which a speed or velocity decreases (so a scalar quantity or a vector quantity).
The brakes produce a deceleration of 10 metres per second per second.
The first sign that a baby is not getting enough oxygen between contractions is often a drop in the baby's heart rate after a contraction, called a late deceleration.
armature coils and a commutator, its inertia is small, allowing rapid acceleration and deceleration.
Bras specifically designed for sports (as opposed to regular bras designed for fashion) reduced the amount of breast movement and cut down on deceleration forces in the breasts.
Clingman's Dome: The thrilling 350-foot long tube ride takes guests along a path that allows them to experience a range of acceleration and deceleration forces from the front, rear sides of the slide.
It may be the result of a direct blow to the head; of the moving head being rapidly stopped, such as when a person's head hits a windshield in a car accident; or by the sudden deceleration of the head without its striking another object.