perpendicular Meaning in the Cambridge English Dictionary Cambridge dictionaries logo
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Meaning of “perpendicular” in the English Dictionary

"perpendicular" in British English

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perpendicularadjective

uk   /ˌpɜː.pənˈdɪk.jə.lər/  us   /ˌpɝː.pənˈdɪk.juː.lɚ/
formal at an angle of 90° to a horizontal line or surface: We scrambled up the nearly perpendicular side of the mountain.
specialized mathematics at an angle of 90° to another line or surface: The wheel rotates around an axis that is perpendicular to the plane.
perpendicularly
adverb uk   /ˌpɜː.pənˈdɪk.jə.lə.li/  us   /ˌpɝː.pənˈdɪk.juː.lɚ.li/ formal or specialized

perpendicularnoun [C]

uk   /ˌpɜː.pənˈdɪk.jə.lər/  us   /ˌpɝː.pənˈdɪk.juː.lɚ/ specialized
a perpendicular line: Draw a perpendicular from the vertex of the triangle to its base.
the perpendicular
a perpendicular position or direction: The wall was leaning at an angle of ten degrees to the perpendicular.
(Definition of perpendicular from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"perpendicular" in American English

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perpendicularadjective [not gradable]

 us   /ˌpər·pənˈdɪk·jə·lər/
geometry at an angle of 90° to another line or surface: Two perpendicular lines form a right angle.
Perpendicular is also standing or rising straight up: The cliff was nearly perpendicular and impossible to climb.
(Definition of perpendicular from the Cambridge Academic Content Dictionary © Cambridge University Press)
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“perpendicular” in British English

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