being in a position or direction perpendicular to the plane of the horizon; upright; plumb.

of, pertaining to, or situated at the vertex.

of or pertaining to the cranial vertex.

Botany .

(of a leaf) having the blade in a perpendicular plane, so that neither of the surfaces can be called upper or lower.

being in the same direction as the axis; lengthwise.

of, constituting, or resulting in vertical combination.

of or pertaining to a product or service from initial planning to sale.

of, pertaining to, or noting a stratified society, nation, etc.

something vertical, as a line or plane.

a vertical or upright position.

a vertical structural member in a truss.

adjective

horizontal , prone , flat , level

adjective

bolt upright , cocked , erect , on end , perpendicular , plumb , sheer , steep , straight-up , up-and-down , upward , upright , acme , orthostatic , sheet , standing , summit , vertex