|a.||1.||Exactly upright or vertical; pointing to the zenith; at right angles to the plane of the horizon; extending in a right line from any point toward the center of the earth.|
|2.||(Geom.) At right angles to a given line or surface; |
|n.||1.||A line at right angles to the plane of the horizon; a vertical line or direction.|
|2.||(Geom.) A line or plane falling at right angles on another line or surface, or making equal angles with it on each side.|
|Noun||1.||perpendicular - a straight line at right angles to another line|
|2.||perpendicular - a Gothic style in 14th and 15th century England; characterized by vertical lines and a four-centered (Tudor) arch and fan vaulting|
|3.||perpendicular - a cord from which a metal weight is suspended pointing directly to the earth's center of gravity; used to determine the vertical from a given point|
Synonyms: plumb line
|4.||perpendicular - an extremely steep face|
|Adj.||1.||perpendicular - intersecting at or forming right angles; "the axes are perpendicular to each other"|
oblique - slanting or inclined in direction or course or position--neither parallel nor perpendicular nor right-angular; "the oblique rays of the winter sun"; "acute and obtuse angles are oblique angles"; "the axis of an oblique cone is not perpendicular to its base"
parallel - being everywhere equidistant and not intersecting; "parallel lines never converge"; "concentric circles are parallel"; "dancers in two parallel rows"
|2.||perpendicular - 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"|
|3.||perpendicular - extremely steep; "the great perpendicular face of the cliff"|