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pentangular

American  
[pen-tang-gyuh-ler] / pɛnˈtæŋ gyə lər /

adjective

  1. having five angles and five sides; pentagonal.


pentangular British  
/ pɛnˈtæŋɡjʊlə /

adjective

  1. having five angles

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of pentangular

1655–65; pent- ( def. ) + angular