predischarge adjective 1noun 1verb 1forms 3 adjective1 •Before a discharge (especially, discharge from a hospital, military service, or other institution).In general, patients who cannot perform a predischarge exercise test have a worse prognosis than those than can do the test. — 2010 noun1 •The act of predischarging, or that which is predischarged.The experiments undertaken in order to determine which of the predischarges, the positive or the negative, is the more important for long sparks. — 1928 verb1 •To discharge beforehand.Filling gas is predischarged by a mini-size coaxial plasma gun, inserted in a side port. — 1987 formspredischarged · predischarging · predischarges