Dictionary.com

pentadecagon

[ pen-tuh-dek-uh-gon, -guhn ]
/ ˌpɛn təˈdɛk əˌgɒn, -gən /
Save This Word!
noun Geometry.
a polygon having 15 angles and 15 sides.
QUIZ
GOOSES. GEESES. I WANT THIS QUIZ ON PLURAL NOUNS!
Test how much you really know about regular and irregular plural nouns with this quiz.
Question 1 of 9
Which of the following nouns has an irregular plural form?
cactus
wallet
goat
party
TAKE THE QUIZ TO FIND OUT

Origin of pentadecagon

penta- + decagon

Words nearby pentadecagon

pentachloronitrobenzene, pentachlorophenol, pentacle, pentad, pentadactyl, pentadecagon, pentaerythritol, pentaerythritol tetranitrate, pentagon, pentagonal dodecahedron, Pentagonese
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022
FEEDBACK