What is the term for the time it takes for a charged capacitor in an RC circuit to discharge to 36.8% of its initial value of stored charge?

In a resistor-capacitor (RC) circuit, the discharge rate of a capacitor follows an exponential decay curve. The standard measure for this rate is the 'time constant,' calculated by multiplying the circuit's resistance (R) by its capacitance (C). During one time constant, the charge and voltage of a discharging capacitor will fall by 63.2% of its starting value. This leaves exactly 36.8% (which is 1/e) of the initial stored charge remaining in the capacitor. Just as with charging circuits, terms like 'discharge factor' or 'discharge period' are incorrect, made-up distractors. The universal term for this specific exponential decay interval is the 'time constant.'