- (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.
Origin of vertical
Examples from the Web for vertically
Horizontally, the head and body traverse an arc of about 100°; vertically, they traverse an arc slightly less than 180°.Natural History of the Bell Vireo, Vireo bellii Audubon|Jon C. Barlow
Basal ring violin-shaped, with ten to twelve flat lamellar, vertically descending feet, about as long as the ovate sagittal ring.
Some of the mines are more than a mile deep (vertically), the deepest in the world.Geology|William J. Miller
Why, for example, should the crater rise so suddenly and vertically immediately round the drop as it enters?A Study of Splashes|Arthur Mason Worthington
If it is set nearly horizontal the thing does not happen, and it is when set too vertically that it is almost bound to occur.Fifty Years of Golf|Horace G. Hutchinson
British Dictionary definitions for vertically
Word Origin for vertical
Word Origin and History for vertically
1550s, "of or at the vertex, directly overhead," from Middle French vertical (1540s), from Late Latin verticalis "overhead," from Latin vertex (genitive verticis) "highest point" (see vertex). Meaning "straight up and down" is first recorded 1704.