instantaneous velocity

/IH0 N S T AH0 N T AE1 N IY0 AH0 S V AH0 L AA0 S AH0 T IY0/
noun
  1. 1

    The velocity of an object at any given instant (especially that of an accelerating object).

  2. 2

    (mathematics) The limit of the change in position per unit time as the unit of time approaches zero; expressed mathematically as lim _(tโ†’0)(ฮ”x)/(ฮ”t)