Standard Lemma guide

trilateral

adj · 5 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.

  • US: /ˌtrɪˈlæ.təɹ.əl/
  • US: [ˌtrɪˈlæ.ɾɚ.əl]
  • US: Recorded audio is listed in the source snapshot.
  • rhymes with -ætəɹəl
  • CMU ARPABET: T R AY0 L AE1 T ER0 AH0 L Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

adj

Meaning 1

Having three sides

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

adj

Meaning 2

Involving three parties

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

Examples

  • The trilateral peace conference, between the red faction, blue faction and white faction, went nowhere.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

adjective satellite

Meaning 3

having three sides

Definition source: Princeton WordNet 3.0

Examples

  • a trilateral figure

Meaning relationships

Synonyms: triangular, three-sided

Antonyms: none provided

4

adjective satellite

Meaning 4

involving three parties

Definition source: Princeton WordNet 3.0

Examples

  • trilateral talks

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

noun

Meaning 5

a three-sided polygon

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: triangle, trigon

Antonyms: none provided

Broader terms: polygon, polygonal shape

Narrower terms: acute triangle, acute-angled triangle, equilateral triangle, equiangular triangle, isosceles triangle, oblique triangle, obtuse triangle, obtuse-angled triangle, right triangle, right-angled triangle, scalene triangle, wedge, wedge shape, cuneus

History

Etymology

Borrowed from New Latin trilaterālis or from tri- + lateral.

Across languages

Translations

5 source translations are retained for this English entry.

  • Armenian: եռակողմ (eṙakoġm) — Translations
  • Bulgarian: тристранен (tristranen) — Translations
  • German: trilateral — Translations
  • Manx: tree-lhiatteeagh — Translations
  • Russian: трёхсторо́нний (trjoxstorónnij) — Translations
Real reading context

trilateral in complete knowledge articles