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perpendicular

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Simple Definition of perpendicular

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

Source: Merriam-Webster's Learner's Dictionary

Full Definition of perpendicular

1. 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. 2 :  extremely steep :  precipitous

3. 3 often capitalized :  of or relating to a medieval English Gothic style of architecture in which vertical lines predominate

4. 4 :  relating to, uniting, or consisting of individuals of dissimilar type or on different levels

perpendicularity

play \-ˌdi-kyə-ˈla-rə-tē\ noun

Examples of perpendicular in a sentence

1. She lives on the street that is perpendicular to mine.

2. <river rafters staring awestruck at the canyon's nearly perpendicular cliffs>

Origin and Etymology 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>.

2

perpendicular

noun per·pen·dic·u·lar

Definition of perpendicular

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

1571

1571

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Definition of perpendicular for Students

1. 1 :  exactly vertical

2. 2 :  being at right angles to a line or surface <The letter T is made with two perpendicular lines.>

2

perpendicular

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noun per·pen·dic·u·lar

Definition of perpendicular for Students

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

Seen and Heard

What made you want to look up perpendicular? Please tell us where you read or heard it (including the quote, if possible).

evanescent

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tending to vanish like vapor

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