迪

Bottom-left walking radical (Kangxi #162) - simplified side-form of 辵, depicting a foot stepping along a road. Indexes 迪 in the motion family with 进, 边, 道, 远, 近. The radical sets the meaning of 迪 firmly in the realm of progress: leading someone forward, guiding them along a path - hence the abstract sense 'to enlighten.'

Inside 由 supplies the sound (yóu → dí, an old palatal-to-dental drift). 由 itself originally depicted a sprout breaking up through soil 田 - emerging, beginning, following from. That 'rising forward' image meshes with the walking radical to give 'to lead onward, to enlighten.' Modern usage 迪士尼 (Disney) is purely phonetic.