Standard Lemma guide

octagonal

adj · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • ŏk-tăgʹə-nl
  • /ɑkˈtæɡənəl/
  • Canada: Recorded audio is listed in the source snapshot.
  • rhymes with -æɡənəl
  • CMU ARPABET: AA0 K T AE1 G AH0 N AH0 L Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

adj

Meaning 1

Shaped like an octagon, in having eight sides and eight angles.

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

Topics: geometry, mathematics, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

adjective

Meaning 2

of or relating to or shaped like an octagon

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: octangular

Antonyms: none provided

History

Etymology

From octagon + -al.

Across languages

Translations

38 source translations are retained for this English entry.

  • Bengali: অষ্টভুজাকৃতি (ośṭobhujakriti) — shaped like an octagon
  • Bulgarian: осмоъгълен (osmoǎgǎlen) — shaped like an octagon
  • Catalan: octagonal — shaped like an octagon
  • Danish: ottekantet — shaped like an octagon
  • Danish: oktagonal — shaped like an octagon
  • Danish: oktogonal — shaped like an octagon
  • Dutch: achthoekig — shaped like an octagon
  • Esperanto: oklatera — shaped like an octagon
  • Esperanto: okangula — shaped like an octagon
  • Finnish: kahdeksankulmioinen — shaped like an octagon
  • Finnish: kahdeksankulmion muotoinen — shaped like an octagon
  • French: octogonal — shaped like an octagon
  • Galician: octogonal — shaped like an octagon
  • Georgian: რვაკუთხა (rvaḳutxa) — shaped like an octagon
  • Georgian: ოქტაგონალური (okṭagonaluri) — shaped like an octagon
  • German: oktagonal — shaped like an octagon
  • German: achteckig — shaped like an octagon
  • Greek: οκτάγωνος (oktágonos) — shaped like an octagon
  • Greek: οχτάγωνος (ochtágonos) — shaped like an octagon
  • Icelandic: átthyrndur — shaped like an octagon
  • Irish: ochtagánach — shaped like an octagon
  • Italian: ottagonale — shaped like an octagon
  • Old English: eahtahyrnede — shaped like an octagon
  • Polish: ośmiokątny — shaped like an octagon
  • Polish: oktagonalny — shaped like an octagon
  • Portuguese: octogonal — shaped like an octagon
  • Portuguese: octagonal — shaped like an octagon
  • Russian: восьмиуго́льный (vosʹmiugólʹnyj) — shaped like an octagon
  • Scottish Gaelic: ochd-shliosach — shaped like an octagon
  • Scottish Gaelic: ochd-shlisneach — shaped like an octagon
  • Spanish: octagonal — shaped like an octagon
  • Spanish: octógono — shaped like an octagon
  • Swedish: oktagonal — shaped like an octagon
  • Swedish: åttakantig — shaped like an octagon
  • Swedish: åttasidig — shaped like an octagon
  • Swedish: oktogonal — shaped like an octagon
  • Tagalog: walsihain — shaped like an octagon
  • Ukrainian: восьмику́тний (vosʹmykútnyj) — shaped like an octagon
Real reading context

octagonal in complete knowledge articles