Origin: 1500-1600 Late Latin verticalis, from Latin vertex
1math, geometry pointing straight up and down in a line and forming an angle of 90 degrees with the ground or with another straight line: vertical stripes The ride includes a vertical drop of 180 feet.2having a structure in which there are top, middle, and bottom levels: a vertical management arrangement3social studies, economics involving all the different stages of a product or service, from producing it to selling it: vertical integration of the industry [Origin: 1500–1600 Late Latin verticalis, from Latin vertex]—vertically /-kli/ adverb → horizontal