perpendicular

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From m drop perpendicular, and then with centre m and radius mn describe arc, and where it cuts that perpendicular is the required point Pˇ_.

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Definitions (29)

Toggle American Heritage definitions American Heritage Dictionary (8)

  1. adjective Mathematics Intersecting at or forming right angles.
  2. adjective Being at right angles to the horizontal; vertical. See Synonyms at vertical.
  3. adjective Of or relating to a style of English Gothic architecture of the 14th and 15th centuries, characterized by emphasis of the vertical element.

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This word has been looked up 158 times.

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Roget's II Roget's II: The New Thesaurus

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Used in the same context Used in the Same Context

vertical ·  precipitous ·  rocky ·  jagged ·  circular ·  inaccessible ·  diagonal ·  oblique ·  upper ·  upright ·  parallel ·  opposite
Roget's II: The New Thesaurus, Third Edition by the Editors of the American Heritage® Dictionary. Copyright © 2003, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Etymologies (2)

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  1. Middle English perpendiculer, from Old French, from Latin perpendiculāris, from perpendiculum, plumb line, from perpendere, to weigh carefully : per-, per- + pendere, to weigh; see (s)pen- in Indo-European roots.

Toggle Century etymologies Century Dictionary (1)

  1. from Middle English perpendiculer (= Dutch perpendikulair =G. perpendikulär, perpendikular = Swedish perpendikulär = Danish perpendikulær), from Of. perpendiculaire, French perpendiculaire = Spanish Portuguese perpendicular = Italian perpendicolare, from Late Latin perpendicularis, also perpendicularius, vertical, as a plumb-line, from Latin perpendiculum, a plumb-line: See perpendicle.
 

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/pərpənˈdɪkjulər/
by American Heritage

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