instantaneous velocity

== English == === Noun === instantaneous velocity (plural instantaneous velocities) The velocity of an object at any given instant (especially that of an accelerating object). (mathematics) The limit of the change in position per unit time as the unit of time approaches zero; expressed mathematically as lim t → 0 Δ x Δ t {\displaystyle \lim _{t\to 0}{\frac {\Delta x}{\Delta t}}}