vertical

adj

1. 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.

   “vertical lines”

   “The Zebra moray is chocolate black with vertical white stripes.”

2. In a two-dimensional Cartesian co-ordinate system, describing the axis y oriented normal (perpendicular, at right angles) to the horizontal axis x.
3. In a three-dimensional co-ordinate system, describing the axis z oriented normal (perpendicular, orthogonal) to the basic plane xy.
4. Of or pertaining to vertical markets.
5. Involving different vintages of the same wine type from the same winery.
6. Of an interval: having the two notes sound simultaneously.

noun

1. A vertex or zenith.
2. A vertical geometrical figure; a perpendicular.
3. An individual slat in a set of vertical blinds.
4. A vertical component of a structure.
5. A vertical market.

   “We offer specialised accounting software targeting various verticals.”

   “As Barclay Capital's Douglas Anmuth wrote in a report on Friday morning, Google's "core search growth" is slowing, so there may now be a "greater urgency in pursuing specific verticals". So, what other specialised areas could Google target?”

6. A command structure for exertion of political power.