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2017 Word of the Year

heptagonal

[hep-tag-uh-nl] /hɛpˈtæg ə nl/
adjective
1.
having seven sides or angles.
Origin of heptagonal
1605-1615
First recorded in 1605-15; heptagon + -al1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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