Usually means: Lines intersecting at ninety degrees.
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We found 36 dictionaries that define the word perpendicular:

General (25 matching dictionaries)
  1. perpendicular: Merriam-Webster.com
  2. Perpendicular, perpendicular, the perpendicular: Oxford Learner's Dictionaries
  3. perpendicular: American Heritage Dictionary of the English Language
  4. perpendicular: Collins English Dictionary
  5. perpendicular: Vocabulary.com
  6. Perpendicular, perpendicular: Wordnik
  7. perpendicular, the perpendicular: Cambridge Advanced Learner's Dictionary
  8. Perpendicular, perpendicular: Wiktionary
  9. perpendicular: Webster's New World College Dictionary, 4th Ed.
  10. perpendicular: The Wordsmyth English Dictionary-Thesaurus
  11. perpendicular: Infoplease Dictionary
  12. perpendicular: Dictionary.com
  13. perpendicular (adj.): Online Etymology Dictionary
  14. perpendicular: Cambridge Essential American English Dictionary
  15. Perpendicular (disambiguation), Perpendicular: Wikipedia, the Free Encyclopedia
  16. Perpendicular: Online Plain Text English Dictionary
  17. perpendicular: Webster's Revised Unabridged, 1913 Edition
  18. perpendicular: Rhymezone
  19. perpendicular, perpendicular: AllWords.com Multi-Lingual Dictionary
  20. perpendicular: Webster's 1828 Dictionary
  21. perpendicular: Free Dictionary
  22. perpendicular: Mnemonic Dictionary
  23. perpendicular: Dictionary/thesaurus

Art (2 matching dictionaries)
  1. perpendicular: ArtLex Lexicon of Visual Art Terminology
  2. PERPENDICULAR: The Britannia Lexicon (Middle Ages Glossary)

Business (2 matching dictionaries)
  1. Construction Term Glossary (No longer online)
  2. Abbreviations in shipping (No longer online)

Computing (1 matching dictionary)
  1. perpendicular: Encyclopedia

Medicine (1 matching dictionary)
  1. online medical dictionary (No longer online)

Miscellaneous (1 matching dictionary)
  1. Perpendicular: Castle Terms

Science (2 matching dictionaries)
  1. Perpendicular: Eric Weisstein's World of Mathematics
  2. perpendicular, perpendicular, perpendicular: PlanetMath Encyclopedia

Slang (2 matching dictionaries)
  1. perpendicular: Green’s Dictionary of Slang
  2. Perpendicular: Urban Dictionary

(Note: See perpendicularity as well.)

Definitions from Wiktionary (
)
American English Definition British English Definition
adjective:  (geometry) At or forming a right angle (to something).
adjective:  Exactly upright; extending in a straight line toward the centre of the earth, etc.
adjective:  Independent of or irrelevant to each other; orthogonal.
noun:  (geometry) A line or plane that is perpendicular to another.
noun:  A device such as a plumb line that is used in making or marking a perpendicular line.
noun:  (obsolete, slang) A meal eaten at a tavern bar while standing up.
adjective:  (architecture) Of a style of English Gothic architecture from the fourteenth and fifteenth centuries, marked by stiff and rectilinear lines, mostly vertical window-tracery, depressed or four-centre arch, fan-tracery vaulting, and panelled walls.

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    periwinkle,     azure,     cerulean,     indigo,     sapphire, more...



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