acceleration.
(Of thelat.)(acceleratio, - onis).
1. f. action and effect of speed or accelerating.
2. f. Mec. Magnitude that expresses the increase in speed in the unit of time. Its SI unit is the meter per second every second (m/s2).
ASTR. Variable interval that is daily ahead of the passage of a star to the Sun by a same Meridian. This interval takes its name from average acceleration , and is 3 min 56 s when it is related to the mean Sun.
