Perpendicular

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Vertical stands for:

  • perpendicular, vertical, local direction of the gravitational acceleration, see plumb direction
  • geometrically orthogonal, at right angles to a line or surface, see orthogonality
  • Arthur Senkrecht, character of the comedian Arnd Schimkat


See also:

Wiktionary: perpendicular  - explanations of meanings, word origins, synonyms, translations