Geometry. meeting a given line or surface at right angles.
maintaining a standing or upright position; standing up.
having a sharp pitch or slope; steep.
(initial capital letter) noting or pertaining to the last style of English Gothic architecture, prevailing from the late 14th through the early 16th century and characterized by the use of predominantly vertical tracery, an overall linear, shallow effect, and fine intricate stonework.
a perpendicular line or plane.
an instrument for indicating the vertical line from any point.
an upright position.
a sharply pitched or precipitously steep mountain face.
moral virtue or uprightness; rectitude.
Nautical. either of two lines perpendicular to the keel line, base line, or designed water line of a vessel.
1350-1400; < Latinperpendiculāris vertical, equivalent to perpendicul(um) plumb line (see perpend2, -i-, -cule2) + -āris-ar1; replacing Middle Englishperpendiculer(e) (adj. and adv.) < Old Frenchperpendiculiere
Repeat perpendicular cuts at the other end of the center cut.
Draw a second line—running "east" to "west"—perpendicular to the first.
Let me call the direction perpendicular to the ground, the y-direction.
In no time, I noticed a woman in the seat perpendicular to ours staring at me.
When the upper-level winds are perpendicular to the surface front they keep the front moving.
Though storms make them stronger, they really only need a steady, fresh breeze blowing perpendicular to the shore to stir them up.
The people move up and down, but the wave moves perpendicular to that.
From these facts, it seems that the condors require perpendicular cliffs.
The fans sat, six to a side, at long tables perpendicular to the stage.
This tripod allows for its legs to open perpendicular to the vertical shaft of your tripod.
British Dictionary definitions for perpendicular
Also normal. at right angles to a horizontal plane
denoting, relating to, or having the style of Gothic architecture used in England during the 14th and 15th centuries, characterized by tracery having vertical lines, a four-centred arch, and fan vaulting
(geometry) a line or plane perpendicular to another
any instrument used for indicating the vertical line through a given point
c.1391, from O.Fr. perpendiculer, from L. perpendicularis "vertical, as a plumb line," from perpendiculum "plumb line," from perpendere "balance carefully," from per- "thoroughly" + pendere "to weigh, to hang" (see pendant).