Definition of perpendicular in English:

perpendicular

Syllabification: per·pen·dic·u·lar
Pronunciation: /ˌpərpənˈdikyələr
 
/

adjective

1At an angle of 90° to a given line, plane, or surface: dormers and gables that extend perpendicular to the main roofline
More example sentences
  • The minor axis is perpendicular to the plane of rotation of the galaxy.
  • Then, since both semicircles are perpendicular to the plane ABC, so is their line of intersection QN.
  • Subsequently, one defines planes perpendicular to such lines, positioning them at the midpoint between the connected particles.
Synonyms
at right angles, at 90 degrees
1.1At an angle of 90° to the ground; vertical: the perpendicular cliff
More example sentences
  • Most people touring the 302-square-kilometre Lushan National Park will be unruffled when they stand in front of perpendicular cliffs and look down on deep valleys.
  • It now is closed off by the forestry and is about four feet from the edge of a cliff which has a perpendicular drop of 700 ft overlooking the Masshill road.
  • The elevation of the Planalto exceeds 1000 m at the eastern end close to the Atlantic coast, and the Serra Geral facing the east forms a perpendicular cliff.
Synonyms
upright, vertical, erect, plumb, straight (up and down), on end, standing, upended
1.2(Of something with a slope) so steep as to be almost vertical: guest houses seem to cling by faith to the perpendicular hillside
2 (Perpendicular) Denoting the latest stage of English Gothic church architecture, prevalent from the late 14th to mid 16th centuries and characterized by broad arches, elaborate fan vaulting, and large windows with vertical tracery: the handsome Perpendicular church of St. Andrew
More example sentences
  • The cruciform church has huge Perpendicular windows, which until the C18 retained their medieval stained glass.
  • The cathedral is the former Perpendicular parish church, reconstructed in 1880, with further extensions completed in 1966.
  • This was unusual: a concave-sided pyramid roof supporting a high flèche rising above a Perpendicular gothic square tower to create a profile curiously reminiscent of the Empire State Building.

noun

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1A straight line at an angle of 90° to a given line, plane, or surface: at each division, draw a perpendicular representing the surface line
More example sentences
  • From the vertices of ABC drop perpendiculars on the transversal.
  • Roughly 50-60% of the cool air coming in is diverted by the perpendiculars of the optical and/or hard drives.
  • In other words, x-axis consists of the feet of the perpendiculars from the focus to the tangents to the parabola.
1.1 (usually the perpendicular) Perpendicular position or direction: the wall declines from the perpendicular a little inward
More example sentences
  • It is gilded, sinuous (especially in the context of Lower Manhattan's perpendiculars and horizontals) and represents Civic Fame.
1.2An instrument for indicating the vertical line from any point, as a spirit level or plumb line.

Origin

late Middle English (as an adverb meaning 'at right angles'): via Old French from Latin perpendicularis, from perpendiculum 'plumb line', from per- 'through' + pendere 'to hang'.

Derivatives

perpendicularity

Pronunciation: /-ˌdikyəˈlaritē/
noun
More example sentences
  • According to him, the chair, which is a version of Rietveld's chair, is a formal one, which represents perpendicularity and horizontality.
  • In a 22-km/h breeze it was remarkable what perpendicularity the guy on the controls could achieve.
  • It must be possible to train your mind to handle this extra perpendicularity.

perpendicularly

adverb
More example sentences
  • Keeping the torso vertical, take a step rearward lowering the body perpendicularly to the floor.
  • If you whack at a stalk perpendicularly, I learned, your machete simply bounces back.
  • This enzyme is composed of two distinct subcomplexes, arranged perpendicularly to each other in an L-shaped structure, which undergo independent assembly.

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