heptagonal

Since 16th century, from heptagon +‎ -al, from Ancient Greek έπτάγωνος (éptágōnos).

• IPA^(key): /hɛpˈtæɡ ə nl/

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heptagonal (not comparable)

1. Having seven angles and sides.
2. (mathematics, of a number) Belonging to the sequence generated by the formula ${\displaystyle {\frac {5n^{2}-3n}{2}}}$ .

• heptagon
• septangle
• septangular

• paleognath

heptagonal (epicene, plural heptagonales)

1. heptagonal (having seven angles and sides)

• heptágonu

heptàgon +‎ -al

heptagonal (masculine and feminine plural heptagonals)

1. heptagonal

heptagonal m or f (plural heptagonais, comparable)

1. heptagonal (having seven angles and sides)

• heptágono

heptagonal (plural heptagonales)

1. heptagonal

• heptágono