Botany To open at definite places, discharging seeds, pollen, or other contents, as the ripe capsules or pods of some plants.
Medicine To rupture or break open, as a surgical wound.
dehisce de·hisce (dĭ-hĭs') v. de·hisced, de·hisc·ing, de·hisc·es To rupture or break open, as a surgical wound.