perpendicular

[ pur-puhn-dik-yuh-ler ]
/ ˌpɜr pənˈdɪk yə lər /
|

adjective

noun

Origin of perpendicular

1350–1400; < Latin perpendiculāris vertical, equivalent to perpendicul(um) plumb line (see perpend2, -i-, -cule2) + -āris -ar1; replacing Middle English perpendiculer(e) (adj. and adv.) < Old French perpendiculiere

SYNONYMS FOR perpendicular

Related forms

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for non-perpendicular

perpendicular

/ (ˌpɜːpənˈdɪkjʊlə) /

adjective

Also: normal at right angles to a horizontal plane
denoting, relating to, or having the style of Gothic architecture used in England during the 14th and 15th centuries, characterized by tracery having vertical lines, a four-centred arch, and fan vaulting
upright; vertical

noun

geometry a line or plane perpendicular to another
any instrument used for indicating the vertical line through a given point
mountaineering a nearly vertical face

Derived Forms

perpendicularity (ˌpɜːpənˌdɪkjʊˈlærɪtɪ), nounperpendicularly, adverb

Word Origin for perpendicular

C14: from Latin perpendiculāris, from perpendiculum a plumb line, from per- through + pendēre to hang
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Science definitions for non-perpendicular

perpendicular

[ pûr′pən-dĭkyə-lər ]

Adjective

Intersecting at or forming a right angle or right angles.

Noun

A line or plane that is perpendicular to a given line or plane.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.