Standard Lemma guide

pentagon

name · noun · 7 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.

  • Canada, US: /ˈpɛntəɡɑn/
  • UK: /ˈpɛntəɡən/
  • Canada: Recorded audio is listed in the source snapshot.
  • Canada, US: pĕn'təgän
  • Canada, US: /ˈpɛn.təˌɡɑn/
  • UK: pĕn'təgən
  • UK: pĕn'təgŏn
  • UK: /ˈpɛn.tə.ɡən/
  • UK: /ˈpɛn.tə.ɡɒn/
  • CMU ARPABET: P EH1 N T IH0 G AA2 N Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
  • CMU ARPABET 2: P EH1 N IH0 G AA2 N Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

name

Meaning 1

The headquarters of the United States Department of Defense.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

name

Meaning 2

The United States Department of Defense.

Definition source: English Wiktionary via Wiktextract

Usage: metonymically

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: Pentagram

Antonyms: none provided

3

noun

Meaning 3

A polygon with five sides and five angles.

Definition source: English Wiktionary via Wiktextract

Topics: geometry, mathematics, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

A fort with five bastions.

Definition source: English Wiktionary via Wiktextract

Topics: government, military, politics, war

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

noun

Meaning 5

a government building with five sides that serves as the headquarters of the United States Department of Defense

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: government building

6

noun

Meaning 6

the United States military establishment

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: bureaucracy, bureaucratism

7

noun

Meaning 7

a five-sided polygon

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: polygon, polygonal shape

History

Etymology

From the shape of the building.

From Middle French pentagone, from Late Latin pentagōnum, from Ancient Greek πεντάγωνον (pentágōnon), noun use of the neuter of the adjective πεντάγωνος (pentágōnos, “five-angled”), from πέντε (pénte, “five”) + -γωνος (-gōnos, “angled”). Equivalent to penta- + -gon.

Across languages

Translations

123 source translations are retained for this English entry.

  • Arabic: بَنْتَاغُون (bantāgōn) — headquarters of the United States Department of Defense
  • Armenian: Պենտագոն — headquarters of the United States Department of Defense
  • Belarusian: Пентаго́н (Pjentahón) — headquarters of the United States Department of Defense
  • Belarusian: Пэнтаго́н (Pentahón) — headquarters of the United States Department of Defense
  • Bengali: পেন্টাগন (penṭagon) — headquarters of the United States Department of Defense
  • Bulgarian: Пентаго́н (Pentagón) — headquarters of the United States Department of Defense
  • Catalan: Pentàgon — headquarters of the United States Department of Defense
  • Chinese Mandarin: 五角大樓 /五角大楼 (Wǔjiǎo Dàlóu) — headquarters of the United States Department of Defense
  • Chinese Mandarin: 五角大廈 /五角大厦 (Wǔjiǎo Dàshà) — headquarters of the United States Department of Defense
  • Dutch: Pentagon — headquarters of the United States Department of Defense
  • Finnish: Pentagon — headquarters of the United States Department of Defense
  • French: Pentagone — headquarters of the United States Department of Defense
  • Georgian: პენტაგონი (ṗenṭagoni) — headquarters of the United States Department of Defense
  • German: Pentagon — headquarters of the United States Department of Defense
  • Greek: Πεντάγωνο (Pentágono) — headquarters of the United States Department of Defense
  • Hebrew: פֶּנְטָגוֹן (pentagón) — headquarters of the United States Department of Defense
  • Hindi: पेंटागन (pẽṭāgan) — headquarters of the United States Department of Defense
  • Hungarian: Pentagon — headquarters of the United States Department of Defense
  • Japanese: ペンタゴン — headquarters of the United States Department of Defense
  • Japanese: 五稜堡 (Goryōho) — headquarters of the United States Department of Defense
  • Korean: 펜타곤 — headquarters of the United States Department of Defense
  • Macedonian: Пентагон — headquarters of the United States Department of Defense
  • Iranian Persian: پِنْتاگون (pentâgon) — headquarters of the United States Department of Defense
  • Polish: Pentagon — headquarters of the United States Department of Defense
  • Portuguese: Pentágono — headquarters of the United States Department of Defense
  • Russian: Пентаго́н (Pentagón) — headquarters of the United States Department of Defense
  • Spanish: Pentágono — headquarters of the United States Department of Defense
  • Swedish: Pentagon — headquarters of the United States Department of Defense
  • Thai: เดอะเพนตากอน — headquarters of the United States Department of Defense
  • Ukrainian: Пентаго́н (Pentahón) — headquarters of the United States Department of Defense
  • Urdu: پینْٹا گون (penṭā gon) — headquarters of the United States Department of Defense
  • Vietnamese: Lầu Năm Góc — headquarters of the United States Department of Defense
  • Vietnamese: Ngũ Giác Đài — headquarters of the United States Department of Defense
  • Afrikaans: pentagoon — a polygon with five sides and five angles
  • Afrikaans: vyfhoek — a polygon with five sides and five angles
  • Southern Altai: бештолык (beštolïk) — a polygon with five sides and five angles
  • Arabic: مُخَمَّس (muḵammas) — a polygon with five sides and five angles
  • Arabic: خُمَاسِيّ أَضْلَاع (ḵumāsiyy ʔaḍlāʕ) — a polygon with five sides and five angles
  • Armenian: հնգանկյուն (hngankyun) — a polygon with five sides and five angles
  • Armenian: պենտագոն (pentagon) — a polygon with five sides and five angles
  • Asturian: pentágonu — a polygon with five sides and five angles
  • Belarusian: пяціку́тнік (pjacikútnik) — a polygon with five sides and five angles
  • Bengali: পঞ্চভুজ (poncobhuj) — a polygon with five sides and five angles
  • Bulgarian: петоъгъ́лник (petoǎgǎ́lnik) — a polygon with five sides and five angles
  • Burmese: ပဉ္စဂံ (panyca.gam) — a polygon with five sides and five angles
  • Catalan: pentàgon — a polygon with five sides and five angles
  • Chinese Mandarin: 五角形 (wǔjiǎoxíng) — a polygon with five sides and five angles
  • Chinese Mandarin: 五边形 (wǔbiānxíng) — a polygon with five sides and five angles
  • Czech: pětiúhelník — a polygon with five sides and five angles
  • Danish: pentagon — a polygon with five sides and five angles
  • Danish: femkant — a polygon with five sides and five angles
  • Dutch: vijfhoek — a polygon with five sides and five angles
  • East Frisian Low German: fiifkâant — a polygon with five sides and five angles
  • Esperanto: kvinlatero — a polygon with five sides and five angles
  • Esperanto: kvinangulo — a polygon with five sides and five angles
  • Estonian: viisnurk — a polygon with five sides and five angles
  • Estonian: pentagoon — a polygon with five sides and five angles
  • Finnish: viisikulmio — a polygon with five sides and five angles
  • Finnish: pentagoni — a polygon with five sides and five angles
  • French: pentagone — a polygon with five sides and five angles
  • North Frisian: Fifhuk — a polygon with five sides and five angles
  • Saterland Frisian: Fieuwkaant — a polygon with five sides and five angles
  • West-Frisian: fiifhoek — a polygon with five sides and five angles
  • Friulian: pentagon — a polygon with five sides and five angles
  • Galician: pentágono — a polygon with five sides and five angles
  • Georgian: ხუთკუთხედი (xutḳutxedi) — a polygon with five sides and five angles
  • German: Fünfeck — a polygon with five sides and five angles
  • German: Pentagon — a polygon with five sides and five angles
  • Greek: πεντάγωνο (pentágono) — a polygon with five sides and five angles
  • Ancient Greek: πεντάγωνον (pentágōnon) — a polygon with five sides and five angles
  • Gujarati: પંચકોણ (pañckoṇ) — a polygon with five sides and five angles
  • Hebrew: מחומש \ מְחֻמָּשׁ (mekhumásh) — a polygon with five sides and five angles
  • Hindi: पंचकोण (pañckoṇ) — a polygon with five sides and five angles
  • Hungarian: ötszög — a polygon with five sides and five angles
  • Icelandic: fimmhyrningur — a polygon with five sides and five angles
  • Ido: pentagono — a polygon with five sides and five angles
  • Indonesian: segi lima — a polygon with five sides and five angles
  • Irish: peinteagán — a polygon with five sides and five angles
  • Italian: pentagono — a polygon with five sides and five angles
  • Japanese: 五角形 — a polygon with five sides and five angles
  • Kannada: ಪಂಚಕೋಣ (pañcakōṇa) — a polygon with five sides and five angles
  • Kazakh: бесбұрыш (besbūryş) — a polygon with five sides and five angles
  • Khmer: បញ្ចកោណ (pañcaʼkaon) — a polygon with five sides and five angles
  • Korean: 오각형 (ogakhyeong) — a polygon with five sides and five angles
  • Kumyk: беш мююшлюк (beş müyuşlük) — a polygon with five sides and five angles
  • Latvian: piecstūris — a polygon with five sides and five angles
  • Luxembourgish: Fënnefeck — a polygon with five sides and five angles
  • Macedonian: пета́голник (petágolnik) — a polygon with five sides and five angles
  • Malay: pancakona — a polygon with five sides and five angles
  • Malay: segi lima — a polygon with five sides and five angles
  • Māori: taparima — a polygon with five sides and five angles
  • Navajo: ashdlaʼgo bízniikʼą́ — a polygon with five sides and five angles
  • Navajo: ashdlaʼgóó adeezʼá — a polygon with five sides and five angles
  • Norwegian Bokmål: femkant — a polygon with five sides and five angles
  • Norwegian Bokmål: pentagon — a polygon with five sides and five angles
  • Norwegian Nynorsk: femkant — a polygon with five sides and five angles
  • Norwegian Nynorsk: pentagon — a polygon with five sides and five angles
  • Polish: pięciokąt — a polygon with five sides and five angles
  • Portuguese: pentágono — a polygon with five sides and five angles
  • Russian: пятиуго́льник (pjatiugólʹnik) — a polygon with five sides and five angles
  • Sardinian: pentàgonu — a polygon with five sides and five angles
  • Scottish Gaelic: còig-cheàrnach — a polygon with five sides and five angles
  • Serbo-Croatian: петерокут — a polygon with five sides and five angles
  • Serbo-Croatian: петоугаоник — a polygon with five sides and five angles
  • Serbo-Croatian: peterokut — a polygon with five sides and five angles
  • Serbo-Croatian: petougaonik — a polygon with five sides and five angles
  • Slovak: päťuholník — a polygon with five sides and five angles
  • Slovene: peterokotnik — a polygon with five sides and five angles
  • Lower Sorbian: pěśirožk — a polygon with five sides and five angles
  • Upper Sorbian: pjećróžk — a polygon with five sides and five angles
  • Upper Sorbian: pjećiróžk — a polygon with five sides and five angles
  • Spanish: pentágono — a polygon with five sides and five angles
  • Swedish: pentagon — a polygon with five sides and five angles
  • Tagalog: limsiha — a polygon with five sides and five angles
  • Tamil: ஐங்கோணம் (aiṅkōṇam) — a polygon with five sides and five angles
  • Thai: ห้าเหลี่ยม (hâa-lìiam) — a polygon with five sides and five angles
  • Tibetan: གཞོགས་ལྡ (gzhogs lda) — a polygon with five sides and five angles
  • Turkish: beşgen — a polygon with five sides and five angles
  • Ukrainian: п'ятику́тник (pʺjatykútnyk) — a polygon with five sides and five angles
  • Vietnamese: ngũ giác — a polygon with five sides and five angles
  • Vietnamese: hình năm cạnh — a polygon with five sides and five angles
  • Welsh: pumongl — a polygon with five sides and five angles
  • Zulu: unxanhlanu class 1a/2a — a polygon with five sides and five angles
Real reading context

pentagon in complete knowledge articles