Dictionary

1perpendicular

adjective per·pen·dic·u·lar \ˌpər-pən-ˈdi-kyə-lər\

: going straight up or to the side at a 90 degree angle from another line or surface

Full Definition of PERPENDICULAR

1
a :  standing at right angles to the plane of the horizon :  exactly upright
b :  being at right angles to a given line or plane
2
:  extremely steep :  precipitous
3
often capitalized :  of or relating to a medieval English Gothic style of architecture in which vertical lines predominate
4
:  relating to, uniting, or consisting of individuals of dissimilar type or on different levels
per·pen·dic·u·lar·i·ty \-ˌdi-kyə-ˈla-rə-tē\ noun
per·pen·dic·u·lar·ly \-ˈdi-kyə-lər-lē\ adverb
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Examples of PERPENDICULAR

  1. She lives on the street that is perpendicular to mine.
  2. <river rafters staring awestruck at the canyon's nearly perpendicular cliffs>

Origin of PERPENDICULAR

Middle English perpendiculer, from Middle French, from Latin perpendicularis, from perpendiculum plumb line, from per- + pendēre to hang — more at pendant
First Known Use: 14th century

Synonym Discussion of PERPENDICULAR

vertical, perpendicular, plumb mean being at right angles to a base line. vertical suggests a line or direction rising straight upward toward a zenith <the side of the cliff is almost vertical>. perpendicular may stress the straightness of a line making a right angle with any other line, not necessarily a horizontal one <the parallel bars are perpendicular to the support posts>. plumb stresses an exact verticality determined (as with a plumb line) by earth's gravity <make sure that the wall is plumb>.

Other Mathematics and Statistics Terms

abscissa, denominator, divisor, equilateral, exponent, hypotenuse, logarithm, oblique, radii, rhomb

Rhymes with PERPENDICULAR

2perpendicular

noun

Definition of PERPENDICULAR

:  a line at right angles to a line or plane (as of the horizon)

First Known Use of PERPENDICULAR

1571

Other Mathematics and Statistics Terms

abscissa, denominator, divisor, equilateral, exponent, hypotenuse, logarithm, oblique, radii, rhomb

Rhymes with PERPENDICULAR

PERPENDICULAR Defined for Kids

1perpendicular

adjective per·pen·dic·u·lar \ˌpər-pən-ˈdi-kyə-lər\

Definition of PERPENDICULAR for Kids

1
:  exactly vertical
2
:  being at right angles to a line or surface <The letter T is made with two perpendicular lines.>
per·pen·dic·u·lar·ly adverb

2perpendicular

noun

Definition of PERPENDICULAR for Kids

:  a line, surface, or position at right angles to another line, surface, or position

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