Usually means: Fifteen-sided polygon in geometry.
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We found 7 dictionaries that define the word pentadecagon:

General (5 matching dictionaries)
  1. pentadecagon: Merriam-Webster
  2. pentadecagon: Wiktionary
  3. pentadecagon: Infoplease Dictionary
  4. pentadecagon: Dictionary.com
  5. Pentadecagon: Wikipedia, the Free Encyclopedia

Computing (1 matching dictionary)
  1. pentadecagon: Encyclopedia

Science (1 matching dictionary)
  1. Pentadecagon: Eric Weisstein's World of Mathematics

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Definitions from Wiktionary (pentadecagon)

▸ noun:  (geometry) A polygon with fifteen sides.

Similar:
pentadecahedron, quindecagon, tetradecagon, heptadecagon, hexadecagon, octadecagon, tridecagon, undecagon, triskaidecagon, pentacontagon, more...

Types:
15-sided polygon, more...

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Similar:
pentadecahedron, quindecagon, tetradecagon, heptadecagon, hexadecagon, octadecagon, tridecagon, undecagon, triskaidecagon, pentacontagon, more...

Types:
15-sided polygon, more...



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