Perpendicular

  1. Adjective.  (architecture) Of a style of English Gothic architecture from the fourteenth and fifteenth centuries.
  2. Adjective.  (geometry) At or forming a right angle (to).
  3. Noun.  (geometry) A line or plane that is perpendicular to another.
  4. Noun.  A device such as a plumb line that is used in making or marking a perpendicular line.

This is an unmodified, but possibly outdated, definition from Wiktionary and used here under the Creative Commons license. Wiktionary is a great resource. If you like it too, please donate to Wikimedia.

This entry was last updated on RefTopia from its source on 3/20/2012.