Dictionary

# 1perpendicular

: 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

## 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

noun

## Definition of PERPENDICULAR

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

1571

## Other Mathematics and Statistics Terms

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

## Rhymes with PERPENDICULAR

PERPENDICULAR Defined for Kids

## 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.>

noun

## Definition of PERPENDICULAR for Kids

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

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