Simple Definition of perpendicular

: 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
Examples of perpendicular in a sentence
She lives on the street that is perpendicular to mine.
<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
Other Mathematics and Statistics Terms
Rhymes with perpendicular
perpendicular
Definition of perpendicular
: a line at right angles to a line or plane (as of the horizon)
1571
First Known Use of perpendicular
1571
Other Mathematics and Statistics Terms
PERPENDICULAR Defined for Kids
Definition of perpendicular for Students
1 : exactly vertical
2 : being at right angles to a line or surface <The letter T is made with two perpendicular lines.>
Definition of perpendicular for Students
: a line, surface, or position at right angles to another line, surface, or position
Learn More about perpendicular

Thesaurus: All synonyms and antonyms for "perpendicular" Spanish Central: Translation of "perpendicular" Nglish: Translation of "perpendicular" for Spanish speakers Britannica English: Translation of "perpendicular" for Arabic speakers
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