1 Higher doses can cause impairment of memory, judgment and coordination, irritability, paranoia,3 and suicidal thoughts. Some people experience the opposite of the intended effect, such as agitation or aggression.
Adj. 1. vertical-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. perpendicular.
For example, a vertical line is the trajectory with respect to the earth (if we neglect its diurnal rotation) of a free particle that is released without an initial velocity and moves under the influence of gravity.