Definitions from Wiktionary (vertical)

▸ adjective:  Standing, pointing, or moving straight up or down; parallel to the local direction of gravity; along the direction of a plumb line; perpendicular to something horizontal.
▸ adjective:  In a two-dimensional Cartesian co-ordinate system, describing the axis y oriented normal (perpendicular, at right angles) to the horizontal axis x.
▸ adjective:  In a three-dimensional co-ordinate system, describing the axis z oriented normal (perpendicular, orthogonal) to the basic plane xy.
▸ adjective:  (marketing) Of or pertaining to vertical markets.
▸ adjective:  (wine tasting) Involving different vintages of the same wine type from the same winery.
▸ adjective:  (music) Of an interval: having the two notes sound simultaneously.
▸ noun:  A vertex or zenith.
▸ noun:  A vertical geometrical figure; a perpendicular.
▸ noun:  An individual slat in a set of vertical blinds.
▸ noun:  A vertical component of a structure.
▸ noun:  (marketing) A vertical market.
▸ noun:  (politics) A command structure for exertion of political power.

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