adj at or during a given instant; as, instantaneous acceleration, velocity, ·etc.
2. instantaneous ·adj done or occurring in an instant, or without any perceptible duration of time; as, the passage of electricity appears to be instantaneous.
adj at or during a given instant; as, instantaneous acceleration, velocity, ·etc.
2. instantaneous ·adj done or occurring in an instant, or without any perceptible duration of time; as, the passage of electricity appears to be instantaneous.
Webster English vocab. Английский словарь Webster. 2012