pentagonal

play
adjective pen·tag·o·nal \pen-ˈta-gə-nəl\

Definition of pentagonal

  1. 1 :  having five sides and five angles

  2. 2 :  having a pentagon as a cross section or as a base a pentagonal pyramid

pentagonally

play \-nəl-ē\ adverb

1571

First Known Use of pentagonal

1571



Seen and Heard

What made you want to look up pentagonal? Please tell us where you read or heard it (including the quote, if possible).