1. (adj)vertical, perpendicular at right angles to the plane of the horizon or a base line
"a vertical camera angle"; "the monument consists of two vertical pillars supporting a horizontal slab"; "measure the perpendicular height"
2. (adj)vertical relating to or involving all stages of a business from production to distribution
3. (adj)erect, vertical, upright upright in position or posture
"an erect stature"; "erect flower stalks"; "for a dog, an erect tail indicates aggression"; "a column still vertical amid the ruins"; "he sat bolt upright"
4. (adj)vertical of or relating to different levels in a hierarchy (as levels of social class or income group)
"vertical social mobility"