pentagonal.
Of, relating to, or shaped like a pentagon.
Meaning & usage
Of, relating to, or shaped like a pentagon.
Where this word comes from
Etymology tree Proto-Indo-European *pénkʷe Proto-Hellenic *pénkʷe Ancient Greek πέντε (pénte) Ancient Greek πεντα- (penta-) Proto-Indo-European *ǵónu Proto-Hellenic *gónu Proto-Hellenic *-ía Proto-Hellenic *gonwía Ancient Greek γωνία (gōnía) Proto-Indo-European *-om Proto-Hellenic *-on Ancient Greek -ον (-on) Ancient Greek πεντάγωνον (pentágōnon)bor. Late Latin pentagōnumder. Middle French pentagoneder. English pentagon English -al English pentagonal From pentagon + -al.
Something having the shape of a pentagon.
Where this word comes from
Etymology tree Proto-Indo-European *pénkʷe Proto-Hellenic *pénkʷe Ancient Greek πέντε (pénte) Ancient Greek πεντα- (penta-) Proto-Indo-European *ǵónu Proto-Hellenic *gónu Proto-Hellenic *-ía Proto-Hellenic *gonwía Ancient Greek γωνία (gōnía) Proto-Indo-European *-om Proto-Hellenic *-on Ancient Greek -ον (-on) Ancient Greek πεντάγωνον (pentágōnon)bor. Late Latin pentagōnumder. Middle French pentagoneder. English pentagon English -al English pentagonal From pentagon + -al.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.