heptagonal

Since 16th century, from heptagon +‎ -al.

• 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 ${\displaystyle {\frac {5n^{2}-3n}{2}}}$.

• septagonal

• 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

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heptagonal (feminine heptagonale, masculine plural heptagonaux, feminine plural heptagonales)

1. heptagonal

• “heptagonal”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.

heptagonal m or f (plural heptagonais)

1. heptagonal (having seven angles and sides)

   Synonym: heptágono

From French heptagonal.

heptagonal m or n (feminine singular heptagonală, masculine plural heptagonali, feminine and neuter plural heptagonale)

1. heptagonal

• IPA^(key): /ebtaɡoˈnal/ [eβ̞.t̪a.ɣ̞oˈnal]
• Rhymes: -al
• Syllabification: hep‧ta‧go‧nal

heptagonal (plural heptagonales)

1. heptagonal

   Synonym: heptágono

• “heptagonal”, in Diccionario de la lengua española, Vigésima tercera edición, Real Academia Española, 2014