perpendicular

nouns

a straight line at right angles to another line
is a type of (narrower)
a line traced by a point traveling in a constant direction; a line of zero curvature
"the shortest distance between two points is a straight line"
a Gothic style in 14th and 15th century England; characterized by vertical lines and a four-centered (Tudor) arch and fan vaulting
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
an extremely steep face
is a type of (narrower)
a vertical surface of a building or cliff

adjectives

intersecting at or forming right angles
"the axes are perpendicular to each other"
is derived from
is derived from
antonym
antonym
is similar to
forming a right angle
is similar to
having a set of mutually perpendicular axes; meeting at right angles
"wind and sea may displace the ship's center of gravity along three orthogonal axes"; "a rectangular Cartesian coordinate system"
is similar to
having the axis perpendicular to the base
"a right angle"
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"
is derived from
is derived from
extremely steep
"the great perpendicular face of the cliff"
is similar to
having a sharp inclination
"the steep attic stairs"; "steep cliffs"