perpendicular

See also: Perpendicular

English

Etymology

Derived from Middle French perpendiculaire, from Old French perpendiculer, from Latin perpendiculum (“plumb line”).

Pronunciation

  • (Received Pronunciation) IPA(key): /ˌpɜː.pənˈdɪk.jə.lə(ɹ)/ enPR: pû"pəndĭ'kyələ(r),
  • (General American, Canada) IPA(key): /ˌpɝ.pənˈdɪk.ju.lɚ/, /ˌpɝ.pənˈdɪk.jə.lɚ/
    • Audio (US):(file)
  • (Australia) IPA(key): /ˌpɜː.pənˈdɪk.jə.lə(ɹ)/
  • (New Zealand) IPA(key): /ˌpøː.pənˈdək.jə.lə(ɹ)/
  • Rhymes: -ɪkjʊlə(ɹ)

Adjective

perpendicular (comparative more perpendicular, superlative most perpendicular)

The line A-B is perpendicular (sense 1) to the line C-D
  1. (geometry) At or forming a right angle (to something).
    Synonyms: normal, orthogonal
    In most houses, the walls are perpendicular to the floor.
    • 2012 March, Henry Petroski, “Opening Doors”, in American Scientist‎[1], volume 100, number 2, pages 112–3:
      A doorknob of whatever roundish shape is effectively a continuum of levers, with the axis of the latching mechanism—known as the spindle—being the fulcrum about which the turning takes place. Applying a force tangential to the knob is essentially equivalent to applying one perpendicular to a radial line defining the lever.
  2. Exactly upright; extending in a straight line toward the centre of the earth, etc.
  3. Independent of or irrelevant to each other; orthogonal.
    • 2019 May 31, David M. Willis, “Wrangled”, in Dumbing of Age:
      Hey, I'm not unsabotaging anything! This is completely perpendicular sabotage!

Derived terms

Translations

Noun

perpendicular (plural perpendiculars)

  1. (geometry) A line or plane that is perpendicular to another.
  2. A device such as a plumb line that is used in making or marking a perpendicular line.
  3. (obsolete, slang) A meal eaten at a tavern bar while standing up.

Translations

See also

  • ⟂ (This symbol can be pronounced “perp” when used as a subscript of a letter representing a vector.)

Catalan

Etymology

Borrowed from Late Latin perpendiculāris, from perpendiculum.

Pronunciation

Adjective

perpendicular m or f (masculine and feminine plural perpendiculars)

  1. perpendicular

Derived terms

Noun

perpendicular f (plural perpendiculars)

  1. perpendicular

Further reading

Portuguese

Etymology

Borrowed from Late Latin perpendiculāris, from perpendiculum.

Pronunciation

 
  • (Brazil) IPA(key): /peʁ.pẽ.d͡ʒi.kuˈlaʁ/ [peh.pẽ.d͡ʒi.kuˈlah]
    • (São Paulo) IPA(key): /peɾ.pẽ.d͡ʒi.kuˈlaɾ/
    • (Rio de Janeiro) IPA(key): /peʁ.pẽ.d͡ʒi.kuˈlaʁ/ [peχ.pẽ.d͡ʒi.kuˈlaχ]
    • (Caipira) IPA(key): /peɻ.pẽ.d͡ʒi.kuˈlaɻ/
 
  • (Portugal) IPA(key): /pɨɾ.pẽ.di.kuˈlaɾ/
    • (Southern Portugal) IPA(key): /pɨɾ.pẽ.di.kuˈla.ɾi/

  • Hyphenation: per‧pen‧di‧cu‧lar

Adjective

perpendicular m or f (plural perpendiculares)

  1. perpendicular

Noun

perpendicular f (plural perpendiculares)

  1. perpendicular

Derived terms

Further reading

Romanian

Etymology

    Borrowed from French perpendiculaire.

    Noun

    perpendicular f (plural perpendiculare)

    1. perpendicular

    Declension

    singular plural
    indefinite definite indefinite definite
    nominative-accusative perpendicular perpendiculara perpendiculare perpendicularele
    genitive-dative perpendiculare perpendicularei perpendiculare perpendicularelor
    vocative — —

    Spanish

    Etymology

    Borrowed from Late Latin perpendiculāris, from perpendiculum.

    Pronunciation

    • IPA(key): /peɾpendikuˈlaɾ/ [peɾ.pẽn̪.d̪i.kuˈlaɾ]
    • Rhymes: -aɾ
    • Syllabification: per‧pen‧di‧cu‧lar

    Adjective

    perpendicular m or f (masculine and feminine plural perpendiculares)

    1. perpendicular

    Derived terms

    Further reading

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