hexahectaenneacontakaiheptagon

UK /ˌhɛksəˌhɛktəˌɛni.əˌkɒntəkaɪˈhɛptəˌɡən/US /ˌhɛksəˌhɛktəˌɛni.əˌkɑntəkaɪˈhɛptəˌɡɑn/

noun1

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(rare) A polygon with 697 sides.
- Colorado is actually a hexahectaenneacontakaiheptagon, meaning it has 697 sides, according to a 2018 bigthink.com article and Kutztown University's math whizzes who create names for polygons. — 2019

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hexahectaenneacontakaiheptagons