The term used to describe a hero's journey in mythology is the monomyth or hero’s journey, a narrative structure popularized by Joseph Campbell. This model outlines a series of stages including the call to adventure, the crossing of thresholds, and the return home transformed. It emphasizes the hero’s growth through trials and tribulations, ultimately illustrating universal themes of courage, transformation, and self-discovery. This structure resonates across diverse cultures, highlighting the shared human experience and the quest for meaning in life.